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Finding the Fourth Proportional to 318,007.20, 477,010.80 and 229,879.20

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Solution

The fourth proportional to 318,007.20, 477,010.80 and 229,879.20 is: 344,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,007.20 : 477,010.80 = 229,879.20 : x
  2. Step 2: Convert to fraction form
    318,007.20/477,010.80 = 229,879.20/x
  3. Step 3: Cross multiply
    318,007.20x = 477,010.80 × 229,879.20
  4. Step 4: Simplify right side
    318,007.20x = 109,654,861,095.36
  5. Step 5: Solve for x
    x = 109,654,861,095.36/318,007.20
  6. Step 6: Final answer
    x = 344,818.80

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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.