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Finding the Fourth Proportional to 302,490.80, 453,701.60 and 80,892.08

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Solution

The fourth proportional to 302,490.80, 453,701.60 and 80,892.08 is: 121,328.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,490.80 : 453,701.60 = 80,892.08 : x
  2. Step 2: Convert to fraction form
    302,490.80/453,701.60 = 80,892.08/x
  3. Step 3: Cross multiply
    302,490.80x = 453,701.60 × 80,892.08
  4. Step 4: Simplify right side
    302,490.80x = 36,700,866,123.33
  5. Step 5: Solve for x
    x = 36,700,866,123.33/302,490.80
  6. Step 6: Final answer
    x = 121,328.87

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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.