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Finding the Fourth Proportional to 443,918.52, 667,321.26 and 356,132.40

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Solution

The fourth proportional to 443,918.52, 667,321.26 and 356,132.40 is: 535,356.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,918.52 : 667,321.26 = 356,132.40 : x
  2. Step 2: Convert to fraction form
    443,918.52/667,321.26 = 356,132.40/x
  3. Step 3: Cross multiply
    443,918.52x = 667,321.26 × 356,132.40
  4. Step 4: Simplify right side
    443,918.52x = 237,654,721,894.82
  5. Step 5: Solve for x
    x = 237,654,721,894.82/443,918.52
  6. Step 6: Final answer
    x = 535,356.63

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1.5x scale

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.