Home / 389,583,143.25-537,641,637.53-215,742,887.25

Finding the Fourth Proportional to 389,583,143.25, 537,641,637.53 and 215,742,887.25

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Solution

The fourth proportional to 389,583,143.25, 537,641,637.53 and 215,742,887.25 is: 297,734,543.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,583,143.25 : 537,641,637.53 = 215,742,887.25 : x
  2. Step 2: Convert to fraction form
    389,583,143.25/537,641,637.53 = 215,742,887.25/x
  3. Step 3: Cross multiply
    389,583,143.25x = 537,641,637.53 × 215,742,887.25
  4. Step 4: Simplify right side
    389,583,143.25x = 115,992,359,185,461,440
  5. Step 5: Solve for x
    x = 115,992,359,185,461,440/389,583,143.25
  6. Step 6: Final answer
    x = 297,734,543.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.