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Finding the Fourth Proportional to 373,549.70, 515,542.78 and 212,428.96

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Solution

The fourth proportional to 373,549.70, 515,542.78 and 212,428.96 is: 293,177.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,549.70 : 515,542.78 = 212,428.96 : x
  2. Step 2: Convert to fraction form
    373,549.70/515,542.78 = 212,428.96/x
  3. Step 3: Cross multiply
    373,549.70x = 515,542.78 × 212,428.96
  4. Step 4: Simplify right side
    373,549.70x = 109,516,216,590.91
  5. Step 5: Solve for x
    x = 109,516,216,590.91/373,549.70
  6. Step 6: Final answer
    x = 293,177.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.