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Finding the Fourth Proportional to 401,549.01, 602,379 and 135,385.62

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Solution

The fourth proportional to 401,549.01, 602,379 and 135,385.62 is: 203,097.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,549.01 : 602,379 = 135,385.62 : x
  2. Step 2: Convert to fraction form
    401,549.01/602,379 = 135,385.62/x
  3. Step 3: Cross multiply
    401,549.01x = 602,379 × 135,385.62
  4. Step 4: Simplify right side
    401,549.01x = 81,553,454,389.98
  5. Step 5: Solve for x
    x = 81,553,454,389.98/401,549.01
  6. Step 6: Final answer
    x = 203,097.14

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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.