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Finding the Fourth Proportional to 423,899.88, 584,580.24 and 278,449.80

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Solution

The fourth proportional to 423,899.88, 584,580.24 and 278,449.80 is: 383,996.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,899.88 : 584,580.24 = 278,449.80 : x
  2. Step 2: Convert to fraction form
    423,899.88/584,580.24 = 278,449.80/x
  3. Step 3: Cross multiply
    423,899.88x = 584,580.24 × 278,449.80
  4. Step 4: Simplify right side
    423,899.88x = 162,776,252,008.04
  5. Step 5: Solve for x
    x = 162,776,252,008.04/423,899.88
  6. Step 6: Final answer
    x = 383,996.93

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1.5x scale

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.