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Finding the Fourth Proportional to 469,953.28, 648,517.92 and 255,088.72

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Solution

The fourth proportional to 469,953.28, 648,517.92 and 255,088.72 is: 352,012.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,953.28 : 648,517.92 = 255,088.72 : x
  2. Step 2: Convert to fraction form
    469,953.28/648,517.92 = 255,088.72/x
  3. Step 3: Cross multiply
    469,953.28x = 648,517.92 × 255,088.72
  4. Step 4: Simplify right side
    469,953.28x = 165,429,606,109.86
  5. Step 5: Solve for x
    x = 165,429,606,109.86/469,953.28
  6. Step 6: Final answer
    x = 352,012.88

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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.