Home / 389,142,742,140.85-583,802,130,338.51-210,064,885,210.18

Finding the Fourth Proportional to 389,142,742,140.85, 583,802,130,338.51 and 210,064,885,210.18

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Solution

The fourth proportional to 389,142,742,140.85, 583,802,130,338.51 and 210,064,885,210.18 is: 315,144,840,734.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,142,742,140.85 : 583,802,130,338.51 = 210,064,885,210.18 : x
  2. Step 2: Convert to fraction form
    389,142,742,140.85/583,802,130,338.51 = 210,064,885,210.18/x
  3. Step 3: Cross multiply
    389,142,742,140.85x = 583,802,130,338.51 × 210,064,885,210.18
  4. Step 4: Simplify right side
    389,142,742,140.85x = 122,636,327,495,017,642,852,352
  5. Step 5: Solve for x
    x = 122,636,327,495,017,642,852,352/389,142,742,140.85
  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.