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Finding the Fourth Proportional to 349,337.60, 523,660.80 and 171,699.20

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Solution

The fourth proportional to 349,337.60, 523,660.80 and 171,699.20 is: 257,378.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,337.60 : 523,660.80 = 171,699.20 : x
  2. Step 2: Convert to fraction form
    349,337.60/523,660.80 = 171,699.20/x
  3. Step 3: Cross multiply
    349,337.60x = 523,660.80 × 171,699.20
  4. Step 4: Simplify right side
    349,337.60x = 89,912,140,431.36
  5. Step 5: Solve for x
    x = 89,912,140,431.36/349,337.60
  6. Step 6: Final answer
    x = 257,378.94

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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.