Home / 442,929.11-664,499.26-143,409.78

Finding the Fourth Proportional to 442,929.11, 664,499.26 and 143,409.78

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Solution

The fourth proportional to 442,929.11, 664,499.26 and 143,409.78 is: 215,148.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,929.11 : 664,499.26 = 143,409.78 : x
  2. Step 2: Convert to fraction form
    442,929.11/664,499.26 = 143,409.78/x
  3. Step 3: Cross multiply
    442,929.11x = 664,499.26 × 143,409.78
  4. Step 4: Simplify right side
    442,929.11x = 95,295,692,686.76
  5. Step 5: Solve for x
    x = 95,295,692,686.76/442,929.11
  6. Step 6: Final answer
    x = 215,148.86

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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.