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Finding the Fourth Proportional to 385,314.78, 577,828.78 and 132,524.30

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Solution

The fourth proportional to 385,314.78, 577,828.78 and 132,524.30 is: 198,737.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,314.78 : 577,828.78 = 132,524.30 : x
  2. Step 2: Convert to fraction form
    385,314.78/577,828.78 = 132,524.30/x
  3. Step 3: Cross multiply
    385,314.78x = 577,828.78 × 132,524.30
  4. Step 4: Simplify right side
    385,314.78x = 76,576,354,589.35
  5. Step 5: Solve for x
    x = 76,576,354,589.35/385,314.78
  6. Step 6: Final answer
    x = 198,737.13

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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.