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Finding the Fourth Proportional to 279,248.69, 418,877.65 and 135,070.71

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Solution

The fourth proportional to 279,248.69, 418,877.65 and 135,070.71 is: 202,608.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,248.69 : 418,877.65 = 135,070.71 : x
  2. Step 2: Convert to fraction form
    279,248.69/418,877.65 = 135,070.71/x
  3. Step 3: Cross multiply
    279,248.69x = 418,877.65 × 135,070.71
  4. Step 4: Simplify right side
    279,248.69x = 56,578,103,246.10
  5. Step 5: Solve for x
    x = 56,578,103,246.10/279,248.69
  6. Step 6: Final answer
    x = 202,608.30

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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.