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Finding the Fourth Proportional to 425,432.80, 638,149.20 and 366,335.20

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Solution

The fourth proportional to 425,432.80, 638,149.20 and 366,335.20 is: 549,502.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,432.80 : 638,149.20 = 366,335.20 : x
  2. Step 2: Convert to fraction form
    425,432.80/638,149.20 = 366,335.20/x
  3. Step 3: Cross multiply
    425,432.80x = 638,149.20 × 366,335.20
  4. Step 4: Simplify right side
    425,432.80x = 233,776,514,811.84
  5. Step 5: Solve for x
    x = 233,776,514,811.84/425,432.80
  6. Step 6: Final answer
    x = 549,502.80

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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.