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Finding the Fourth Proportional to 438,661.80, 657,117.90 and 251,454.60

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Solution

The fourth proportional to 438,661.80, 657,117.90 and 251,454.60 is: 376,680.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,661.80 : 657,117.90 = 251,454.60 : x
  2. Step 2: Convert to fraction form
    438,661.80/657,117.90 = 251,454.60/x
  3. Step 3: Cross multiply
    438,661.80x = 657,117.90 × 251,454.60
  4. Step 4: Simplify right side
    438,661.80x = 165,235,318,697.34
  5. Step 5: Solve for x
    x = 165,235,318,697.34/438,661.80
  6. Step 6: Final answer
    x = 376,680.44

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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.