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Finding the Fourth Proportional to 454,640, 627,403.24 and 253,436

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Solution

The fourth proportional to 454,640, 627,403.24 and 253,436 is: 349,741.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,640 : 627,403.24 = 253,436 : x
  2. Step 2: Convert to fraction form
    454,640/627,403.24 = 253,436/x
  3. Step 3: Cross multiply
    454,640x = 627,403.24 × 253,436
  4. Step 4: Simplify right side
    454,640x = 159,006,567,532.64
  5. Step 5: Solve for x
    x = 159,006,567,532.64/454,640
  6. Step 6: Final answer
    x = 349,741.70

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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.