Home / 391,026.48-539,580.60-221,233.20

Finding the Fourth Proportional to 391,026.48, 539,580.60 and 221,233.20

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Solution

The fourth proportional to 391,026.48, 539,580.60 and 221,233.20 is: 305,281.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,026.48 : 539,580.60 = 221,233.20 : x
  2. Step 2: Convert to fraction form
    391,026.48/539,580.60 = 221,233.20/x
  3. Step 3: Cross multiply
    391,026.48x = 539,580.60 × 221,233.20
  4. Step 4: Simplify right side
    391,026.48x = 119,373,142,795.92
  5. Step 5: Solve for x
    x = 119,373,142,795.92/391,026.48
  6. Step 6: Final answer
    x = 305,281.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.