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Finding the Fourth Proportional to 429,781.78, 644,801.46 and 173,482.40

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Solution

The fourth proportional to 429,781.78, 644,801.46 and 173,482.40 is: 260,275.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,781.78 : 644,801.46 = 173,482.40 : x
  2. Step 2: Convert to fraction form
    429,781.78/644,801.46 = 173,482.40/x
  3. Step 3: Cross multiply
    429,781.78x = 644,801.46 × 173,482.40
  4. Step 4: Simplify right side
    429,781.78x = 111,861,704,804.30
  5. Step 5: Solve for x
    x = 111,861,704,804.30/429,781.78
  6. Step 6: Final answer
    x = 260,275.59

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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.