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Finding the Fourth Proportional to 468,070.36, 645,935.14 and 253,209.90

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Solution

The fourth proportional to 468,070.36, 645,935.14 and 253,209.90 is: 349,428.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,070.36 : 645,935.14 = 253,209.90 : x
  2. Step 2: Convert to fraction form
    468,070.36/645,935.14 = 253,209.90/x
  3. Step 3: Cross multiply
    468,070.36x = 645,935.14 × 253,209.90
  4. Step 4: Simplify right side
    468,070.36x = 163,557,172,205.89
  5. Step 5: Solve for x
    x = 163,557,172,205.89/468,070.36
  6. Step 6: Final answer
    x = 349,428.60

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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.