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Finding the Fourth Proportional to 261,008.30, 391,605.40 and 161,052.08

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Solution

The fourth proportional to 261,008.30, 391,605.40 and 161,052.08 is: 241,635.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,008.30 : 391,605.40 = 161,052.08 : x
  2. Step 2: Convert to fraction form
    261,008.30/391,605.40 = 161,052.08/x
  3. Step 3: Cross multiply
    261,008.30x = 391,605.40 × 161,052.08
  4. Step 4: Simplify right side
    261,008.30x = 63,068,864,209.23
  5. Step 5: Solve for x
    x = 63,068,864,209.23/261,008.30
  6. Step 6: Final answer
    x = 241,635.47

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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.