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Finding the Fourth Proportional to 351,617.40, 527,423.81 and 85,376.12

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Solution

The fourth proportional to 351,617.40, 527,423.81 and 85,376.12 is: 128,063.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,617.40 : 527,423.81 = 85,376.12 : x
  2. Step 2: Convert to fraction form
    351,617.40/527,423.81 = 85,376.12/x
  3. Step 3: Cross multiply
    351,617.40x = 527,423.81 × 85,376.12
  4. Step 4: Simplify right side
    351,617.40x = 45,029,395,429.42
  5. Step 5: Solve for x
    x = 45,029,395,429.42/351,617.40
  6. Step 6: Final answer
    x = 128,063.62

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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.