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Finding the Fourth Proportional to 426,679.64, 640,044.04 and 160,442.47

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Solution

The fourth proportional to 426,679.64, 640,044.04 and 160,442.47 is: 240,672.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,679.64 : 640,044.04 = 160,442.47 : x
  2. Step 2: Convert to fraction form
    426,679.64/640,044.04 = 160,442.47/x
  3. Step 3: Cross multiply
    426,679.64x = 640,044.04 × 160,442.47
  4. Step 4: Simplify right side
    426,679.64x = 102,690,244,685.16
  5. Step 5: Solve for x
    x = 102,690,244,685.16/426,679.64
  6. Step 6: Final answer
    x = 240,672.94

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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.