Home / 426,532.32-639,732.87-142,227.81

Finding the Fourth Proportional to 426,532.32, 639,732.87 and 142,227.81

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Solution

The fourth proportional to 426,532.32, 639,732.87 and 142,227.81 is: 213,319.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,532.32 : 639,732.87 = 142,227.81 : x
  2. Step 2: Convert to fraction form
    426,532.32/639,732.87 = 142,227.81/x
  3. Step 3: Cross multiply
    426,532.32x = 639,732.87 × 142,227.81
  4. Step 4: Simplify right side
    426,532.32x = 90,987,805,085.11
  5. Step 5: Solve for x
    x = 90,987,805,085.11/426,532.32
  6. Step 6: Final answer
    x = 213,319.84

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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.