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Finding the Fourth Proportional to 469,387.20, 647,750.80 and 254,526.96

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Solution

The fourth proportional to 469,387.20, 647,750.80 and 254,526.96 is: 351,245.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,387.20 : 647,750.80 = 254,526.96 : x
  2. Step 2: Convert to fraction form
    469,387.20/647,750.80 = 254,526.96/x
  3. Step 3: Cross multiply
    469,387.20x = 647,750.80 × 254,526.96
  4. Step 4: Simplify right side
    469,387.20x = 164,870,041,961.57
  5. Step 5: Solve for x
    x = 164,870,041,961.57/469,387.20
  6. Step 6: Final answer
    x = 351,245.29

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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.