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Finding the Fourth Proportional to 478,082.70, 717,156.45 and 162,563.40

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Solution

The fourth proportional to 478,082.70, 717,156.45 and 162,563.40 is: 243,856.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,082.70 : 717,156.45 = 162,563.40 : x
  2. Step 2: Convert to fraction form
    478,082.70/717,156.45 = 162,563.40/x
  3. Step 3: Cross multiply
    478,082.70x = 717,156.45 × 162,563.40
  4. Step 4: Simplify right side
    478,082.70x = 116,583,390,843.93
  5. Step 5: Solve for x
    x = 116,583,390,843.93/478,082.70
  6. Step 6: Final answer
    x = 243,856.12

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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.