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Finding the Fourth Proportional to 634,167.20, 875,140.80 and 347,689.76

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Solution

The fourth proportional to 634,167.20, 875,140.80 and 347,689.76 is: 479,806.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,167.20 : 875,140.80 = 347,689.76 : x
  2. Step 2: Convert to fraction form
    634,167.20/875,140.80 = 347,689.76/x
  3. Step 3: Cross multiply
    634,167.20x = 875,140.80 × 347,689.76
  4. Step 4: Simplify right side
    634,167.20x = 304,277,494,718.21
  5. Step 5: Solve for x
    x = 304,277,494,718.21/634,167.20
  6. Step 6: Final answer
    x = 479,806.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.