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Finding the Fourth Proportional to 478,491.78, 717,848.85 and 162,951.42

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Solution

The fourth proportional to 478,491.78, 717,848.85 and 162,951.42 is: 244,464.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,491.78 : 717,848.85 = 162,951.42 : x
  2. Step 2: Convert to fraction form
    478,491.78/717,848.85 = 162,951.42/x
  3. Step 3: Cross multiply
    478,491.78x = 717,848.85 × 162,951.42
  4. Step 4: Simplify right side
    478,491.78x = 116,974,489,452.87
  5. Step 5: Solve for x
    x = 116,974,489,452.87/478,491.78
  6. Step 6: Final answer
    x = 244,464.99

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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.