Home / 442,966.40-664,012.20-218,142.80

Finding the Fourth Proportional to 442,966.40, 664,012.20 and 218,142.80

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Solution

The fourth proportional to 442,966.40, 664,012.20 and 218,142.80 is: 326,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,966.40 : 664,012.20 = 218,142.80 : x
  2. Step 2: Convert to fraction form
    442,966.40/664,012.20 = 218,142.80/x
  3. Step 3: Cross multiply
    442,966.40x = 664,012.20 × 218,142.80
  4. Step 4: Simplify right side
    442,966.40x = 144,849,480,542.16
  5. Step 5: Solve for x
    x = 144,849,480,542.16/442,966.40
  6. Step 6: Final answer
    x = 326,998.80

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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.