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Finding the Fourth Proportional to 401,927.80, 602,891.70 and 135,624.10

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Solution

The fourth proportional to 401,927.80, 602,891.70 and 135,624.10 is: 203,436.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,927.80 : 602,891.70 = 135,624.10 : x
  2. Step 2: Convert to fraction form
    401,927.80/602,891.70 = 135,624.10/x
  3. Step 3: Cross multiply
    401,927.80x = 602,891.70 × 135,624.10
  4. Step 4: Simplify right side
    401,927.80x = 81,766,644,209.97
  5. Step 5: Solve for x
    x = 81,766,644,209.97/401,927.80
  6. Step 6: Final answer
    x = 203,436.15

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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.