Home / 456,219.28-684,420-140,664.16

Finding the Fourth Proportional to 456,219.28, 684,420 and 140,664.16

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Solution

The fourth proportional to 456,219.28, 684,420 and 140,664.16 is: 211,024.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,219.28 : 684,420 = 140,664.16 : x
  2. Step 2: Convert to fraction form
    456,219.28/684,420 = 140,664.16/x
  3. Step 3: Cross multiply
    456,219.28x = 684,420 × 140,664.16
  4. Step 4: Simplify right side
    456,219.28x = 96,273,364,387.20
  5. Step 5: Solve for x
    x = 96,273,364,387.20/456,219.28
  6. Step 6: Final answer
    x = 211,024.32

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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.