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Finding the Fourth Proportional to 438,854.54, 658,806.68 and 261,445.10

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Solution

The fourth proportional to 438,854.54, 658,806.68 and 261,445.10 is: 392,480.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,854.54 : 658,806.68 = 261,445.10 : x
  2. Step 2: Convert to fraction form
    438,854.54/658,806.68 = 261,445.10/x
  3. Step 3: Cross multiply
    438,854.54x = 658,806.68 × 261,445.10
  4. Step 4: Simplify right side
    438,854.54x = 172,241,775,692.85
  5. Step 5: Solve for x
    x = 172,241,775,692.85/438,854.54
  6. Step 6: Final answer
    x = 392,480.34

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1.5x scale

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.