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Finding the Fourth Proportional to 426,679.68, 640,044.08 and 160,442.50

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Solution

The fourth proportional to 426,679.68, 640,044.08 and 160,442.50 is: 240,672.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,679.68 : 640,044.08 = 160,442.50 : x
  2. Step 2: Convert to fraction form
    426,679.68/640,044.08 = 160,442.50/x
  3. Step 3: Cross multiply
    426,679.68x = 640,044.08 × 160,442.50
  4. Step 4: Simplify right side
    426,679.68x = 102,690,269,904.70
  5. Step 5: Solve for x
    x = 102,690,269,904.70/426,679.68
  6. Step 6: Final answer
    x = 240,672.98

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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.