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Finding the Fourth Proportional to 443,931.52, 667,340.76 and 356,145.40

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Solution

The fourth proportional to 443,931.52, 667,340.76 and 356,145.40 is: 535,376.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,931.52 : 667,340.76 = 356,145.40 : x
  2. Step 2: Convert to fraction form
    443,931.52/667,340.76 = 356,145.40/x
  3. Step 3: Cross multiply
    443,931.52x = 667,340.76 × 356,145.40
  4. Step 4: Simplify right side
    443,931.52x = 237,670,341,906.50
  5. Step 5: Solve for x
    x = 237,670,341,906.50/443,931.52
  6. Step 6: Final answer
    x = 535,376.14

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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.