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Finding the Fourth Proportional to 369,143.30, 551,691.89 and 269,513.30

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Solution

The fourth proportional to 369,143.30, 551,691.89 and 269,513.30 is: 402,792.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,143.30 : 551,691.89 = 269,513.30 : x
  2. Step 2: Convert to fraction form
    369,143.30/551,691.89 = 269,513.30/x
  3. Step 3: Cross multiply
    369,143.30x = 551,691.89 × 269,513.30
  4. Step 4: Simplify right side
    369,143.30x = 148,688,301,857.14
  5. Step 5: Solve for x
    x = 148,688,301,857.14/369,143.30
  6. Step 6: Final answer
    x = 402,792.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.