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Finding the Fourth Proportional to 443,006.80, 664,510.20 and 265,422.40

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Solution

The fourth proportional to 443,006.80, 664,510.20 and 265,422.40 is: 398,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,006.80 : 664,510.20 = 265,422.40 : x
  2. Step 2: Convert to fraction form
    443,006.80/664,510.20 = 265,422.40/x
  3. Step 3: Cross multiply
    443,006.80x = 664,510.20 × 265,422.40
  4. Step 4: Simplify right side
    443,006.80x = 176,375,892,108.48
  5. Step 5: Solve for x
    x = 176,375,892,108.48/443,006.80
  6. Step 6: Final answer
    x = 398,133.60

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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.