Home / 278,735.85-415,997.40-251,831.70

Finding the Fourth Proportional to 278,735.85, 415,997.40 and 251,831.70

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Solution

The fourth proportional to 278,735.85, 415,997.40 and 251,831.70 is: 375,844.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,735.85 : 415,997.40 = 251,831.70 : x
  2. Step 2: Convert to fraction form
    278,735.85/415,997.40 = 251,831.70/x
  3. Step 3: Cross multiply
    278,735.85x = 415,997.40 × 251,831.70
  4. Step 4: Simplify right side
    278,735.85x = 104,761,333,381.95
  5. Step 5: Solve for x
    x = 104,761,333,381.95/278,735.85
  6. Step 6: Final answer
    x = 375,844.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.