Home / 389,142,742,140.86-583,802,130,338.48-210,064,885,210.20

Finding the Fourth Proportional to 389,142,742,140.86, 583,802,130,338.48 and 210,064,885,210.20

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Solution

The fourth proportional to 389,142,742,140.86, 583,802,130,338.48 and 210,064,885,210.20 is: 315,144,840,734.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,142,742,140.86 : 583,802,130,338.48 = 210,064,885,210.20 : x
  2. Step 2: Convert to fraction form
    389,142,742,140.86/583,802,130,338.48 = 210,064,885,210.20/x
  3. Step 3: Cross multiply
    389,142,742,140.86x = 583,802,130,338.48 × 210,064,885,210.20
  4. Step 4: Simplify right side
    389,142,742,140.86x = 122,636,327,495,023,028,338,688
  5. Step 5: Solve for x
    x = 122,636,327,495,023,028,338,688/389,142,742,140.86
  6. Step 6: Final answer
    x = 315,144,840,734.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.