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Finding the Fourth Proportional to 399,446.88, 551,239.92 and 220,598.88

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Solution

The fourth proportional to 399,446.88, 551,239.92 and 220,598.88 is: 304,428.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,446.88 : 551,239.92 = 220,598.88 : x
  2. Step 2: Convert to fraction form
    399,446.88/551,239.92 = 220,598.88/x
  3. Step 3: Cross multiply
    399,446.88x = 551,239.92 × 220,598.88
  4. Step 4: Simplify right side
    399,446.88x = 121,602,908,963.29
  5. Step 5: Solve for x
    x = 121,602,908,963.29/399,446.88
  6. Step 6: Final answer
    x = 304,428.24

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1.5x scale

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.