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Finding the Fourth Proportional to 509,073.70, 763,609.90 and 129,994.25

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Solution

The fourth proportional to 509,073.70, 763,609.90 and 129,994.25 is: 194,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,073.70 : 763,609.90 = 129,994.25 : x
  2. Step 2: Convert to fraction form
    509,073.70/763,609.90 = 129,994.25/x
  3. Step 3: Cross multiply
    509,073.70x = 763,609.90 × 129,994.25
  4. Step 4: Simplify right side
    509,073.70x = 99,264,894,479.93
  5. Step 5: Solve for x
    x = 99,264,894,479.93/509,073.70
  6. Step 6: Final answer
    x = 194,991.20

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Similar ratio
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1.5x scale

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.