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Finding the Fourth Proportional to 392,017.60, 587,151.60 and 302,569.30

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Solution

The fourth proportional to 392,017.60, 587,151.60 and 302,569.30 is: 453,178.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,017.60 : 587,151.60 = 302,569.30 : x
  2. Step 2: Convert to fraction form
    392,017.60/587,151.60 = 302,569.30/x
  3. Step 3: Cross multiply
    392,017.60x = 587,151.60 × 302,569.30
  4. Step 4: Simplify right side
    392,017.60x = 177,654,048,605.88
  5. Step 5: Solve for x
    x = 177,654,048,605.88/392,017.60
  6. Step 6: Final answer
    x = 453,178.76

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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.