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Finding the Fourth Proportional to 355,624.93, 532,677.30 and 287,864.38

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Solution

The fourth proportional to 355,624.93, 532,677.30 and 287,864.38 is: 431,181.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,624.93 : 532,677.30 = 287,864.38 : x
  2. Step 2: Convert to fraction form
    355,624.93/532,677.30 = 287,864.38/x
  3. Step 3: Cross multiply
    355,624.93x = 532,677.30 × 287,864.38
  4. Step 4: Simplify right side
    355,624.93x = 153,338,820,704.57
  5. Step 5: Solve for x
    x = 153,338,820,704.57/355,624.93
  6. Step 6: Final answer
    x = 431,181.30

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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.