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Finding the Fourth Proportional to 287,516.88, 429,253.68 and 219,693.96

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Solution

The fourth proportional to 287,516.88, 429,253.68 and 219,693.96 is: 327,996.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,516.88 : 429,253.68 = 219,693.96 : x
  2. Step 2: Convert to fraction form
    287,516.88/429,253.68 = 219,693.96/x
  3. Step 3: Cross multiply
    287,516.88x = 429,253.68 × 219,693.96
  4. Step 4: Simplify right side
    287,516.88x = 94,304,440,803.77
  5. Step 5: Solve for x
    x = 94,304,440,803.77/287,516.88
  6. Step 6: Final answer
    x = 327,996.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.