Home / 442,821.60-664,232.40-127,288.80

Finding the Fourth Proportional to 442,821.60, 664,232.40 and 127,288.80

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Solution

The fourth proportional to 442,821.60, 664,232.40 and 127,288.80 is: 190,933.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,821.60 : 664,232.40 = 127,288.80 : x
  2. Step 2: Convert to fraction form
    442,821.60/664,232.40 = 127,288.80/x
  3. Step 3: Cross multiply
    442,821.60x = 664,232.40 × 127,288.80
  4. Step 4: Simplify right side
    442,821.60x = 84,549,345,117.12
  5. Step 5: Solve for x
    x = 84,549,345,117.12/442,821.60
  6. Step 6: Final answer
    x = 190,933.20

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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.