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Finding the Fourth Proportional to 355,625.43, 532,678.05 and 287,864.88

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Solution

The fourth proportional to 355,625.43, 532,678.05 and 287,864.88 is: 431,182.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,625.43 : 532,678.05 = 287,864.88 : x
  2. Step 2: Convert to fraction form
    355,625.43/532,678.05 = 287,864.88/x
  3. Step 3: Cross multiply
    355,625.43x = 532,678.05 × 287,864.88
  4. Step 4: Simplify right side
    355,625.43x = 153,339,302,941.88
  5. Step 5: Solve for x
    x = 153,339,302,941.88/355,625.43
  6. Step 6: Final answer
    x = 431,182.05

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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.