Home / 456,385.20-684,642.60-140,809.20

Finding the Fourth Proportional to 456,385.20, 684,642.60 and 140,809.20

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Solution

The fourth proportional to 456,385.20, 684,642.60 and 140,809.20 is: 211,233.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,385.20 : 684,642.60 = 140,809.20 : x
  2. Step 2: Convert to fraction form
    456,385.20/684,642.60 = 140,809.20/x
  3. Step 3: Cross multiply
    456,385.20x = 684,642.60 × 140,809.20
  4. Step 4: Simplify right side
    456,385.20x = 96,403,976,791.92
  5. Step 5: Solve for x
    x = 96,403,976,791.92/456,385.20
  6. Step 6: Final answer
    x = 211,233.79

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1.5x scale

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.