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Finding the Fourth Proportional to 478,508.64, 717,865.02 and 238,751.46

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Solution

The fourth proportional to 478,508.64, 717,865.02 and 238,751.46 is: 358,178.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,508.64 : 717,865.02 = 238,751.46 : x
  2. Step 2: Convert to fraction form
    478,508.64/717,865.02 = 238,751.46/x
  3. Step 3: Cross multiply
    478,508.64x = 717,865.02 × 238,751.46
  4. Step 4: Simplify right side
    478,508.64x = 171,391,321,607.93
  5. Step 5: Solve for x
    x = 171,391,321,607.93/478,508.64
  6. Step 6: Final answer
    x = 358,178.11

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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.