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Finding the Fourth Proportional to 288,654.40, 432,904.80 and 88,974.40

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Solution

The fourth proportional to 288,654.40, 432,904.80 and 88,974.40 is: 133,437.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,654.40 : 432,904.80 = 88,974.40 : x
  2. Step 2: Convert to fraction form
    288,654.40/432,904.80 = 88,974.40/x
  3. Step 3: Cross multiply
    288,654.40x = 432,904.80 × 88,974.40
  4. Step 4: Simplify right side
    288,654.40x = 38,517,444,837.12
  5. Step 5: Solve for x
    x = 38,517,444,837.12/288,654.40
  6. Step 6: Final answer
    x = 133,437.93

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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.