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Finding the Fourth Proportional to 478,251.16, 717,108.82 and 221,808.76

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Solution

The fourth proportional to 478,251.16, 717,108.82 and 221,808.76 is: 332,588.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,251.16 : 717,108.82 = 221,808.76 : x
  2. Step 2: Convert to fraction form
    478,251.16/717,108.82 = 221,808.76/x
  3. Step 3: Cross multiply
    478,251.16x = 717,108.82 × 221,808.76
  4. Step 4: Simplify right side
    478,251.16x = 159,061,018,149.26
  5. Step 5: Solve for x
    x = 159,061,018,149.26/478,251.16
  6. Step 6: Final answer
    x = 332,588.88

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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.