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Finding the Fourth Proportional to 438,503.22, 656,267.67 and 278,502.30

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Solution

The fourth proportional to 438,503.22, 656,267.67 and 278,502.30 is: 416,808.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,503.22 : 656,267.67 = 278,502.30 : x
  2. Step 2: Convert to fraction form
    438,503.22/656,267.67 = 278,502.30/x
  3. Step 3: Cross multiply
    438,503.22x = 656,267.67 × 278,502.30
  4. Step 4: Simplify right side
    438,503.22x = 182,772,055,510.64
  5. Step 5: Solve for x
    x = 182,772,055,510.64/438,503.22
  6. Step 6: Final answer
    x = 416,808.92

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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.