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Finding the Fourth Proportional to 423,387.44, 584,274.38 and 239,622.66

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Solution

The fourth proportional to 423,387.44, 584,274.38 and 239,622.66 is: 330,679.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,387.44 : 584,274.38 = 239,622.66 : x
  2. Step 2: Convert to fraction form
    423,387.44/584,274.38 = 239,622.66/x
  3. Step 3: Cross multiply
    423,387.44x = 584,274.38 × 239,622.66
  4. Step 4: Simplify right side
    423,387.44x = 140,005,381,105.45
  5. Step 5: Solve for x
    x = 140,005,381,105.45/423,387.44
  6. Step 6: Final answer
    x = 330,679.11

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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.