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Finding the Fourth Proportional to 348,515.60, 522,082.20 and 207,856.40

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Solution

The fourth proportional to 348,515.60, 522,082.20 and 207,856.40 is: 311,372.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,515.60 : 522,082.20 = 207,856.40 : x
  2. Step 2: Convert to fraction form
    348,515.60/522,082.20 = 207,856.40/x
  3. Step 3: Cross multiply
    348,515.60x = 522,082.20 × 207,856.40
  4. Step 4: Simplify right side
    348,515.60x = 108,518,126,596.08
  5. Step 5: Solve for x
    x = 108,518,126,596.08/348,515.60
  6. Step 6: Final answer
    x = 311,372.36

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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.