Home / 442,829.60-664,082.40-143,388.80

Finding the Fourth Proportional to 442,829.60, 664,082.40 and 143,388.80

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Solution

The fourth proportional to 442,829.60, 664,082.40 and 143,388.80 is: 215,030.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,829.60 : 664,082.40 = 143,388.80 : x
  2. Step 2: Convert to fraction form
    442,829.60/664,082.40 = 143,388.80/x
  3. Step 3: Cross multiply
    442,829.60x = 664,082.40 × 143,388.80
  4. Step 4: Simplify right side
    442,829.60x = 95,221,978,437.12
  5. Step 5: Solve for x
    x = 95,221,978,437.12/442,829.60
  6. Step 6: Final answer
    x = 215,030.74

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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.