Home / 278,319.10-417,575.85-100,831.90

Finding the Fourth Proportional to 278,319.10, 417,575.85 and 100,831.90

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Solution

The fourth proportional to 278,319.10, 417,575.85 and 100,831.90 is: 151,283.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,319.10 : 417,575.85 = 100,831.90 : x
  2. Step 2: Convert to fraction form
    278,319.10/417,575.85 = 100,831.90/x
  3. Step 3: Cross multiply
    278,319.10x = 417,575.85 × 100,831.90
  4. Step 4: Simplify right side
    278,319.10x = 42,104,966,349.62
  5. Step 5: Solve for x
    x = 42,104,966,349.62/278,319.10
  6. Step 6: Final answer
    x = 151,283.06

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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.