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Finding the Fourth Proportional to 297,988.48, 446,972.80 and 129,508.96

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Solution

The fourth proportional to 297,988.48, 446,972.80 and 129,508.96 is: 194,259.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,988.48 : 446,972.80 = 129,508.96 : x
  2. Step 2: Convert to fraction form
    297,988.48/446,972.80 = 129,508.96/x
  3. Step 3: Cross multiply
    297,988.48x = 446,972.80 × 129,508.96
  4. Step 4: Simplify right side
    297,988.48x = 57,886,982,476.29
  5. Step 5: Solve for x
    x = 57,886,982,476.29/297,988.48
  6. Step 6: Final answer
    x = 194,259.13

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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.