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Finding the Fourth Proportional to 391,050.76, 539,650.04 and 212,202.76

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Solution

The fourth proportional to 391,050.76, 539,650.04 and 212,202.76 is: 292,839.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,050.76 : 539,650.04 = 212,202.76 : x
  2. Step 2: Convert to fraction form
    391,050.76/539,650.04 = 212,202.76/x
  3. Step 3: Cross multiply
    391,050.76x = 539,650.04 × 212,202.76
  4. Step 4: Simplify right side
    391,050.76x = 114,515,227,922.11
  5. Step 5: Solve for x
    x = 114,515,227,922.11/391,050.76
  6. Step 6: Final answer
    x = 292,839.80

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1.5x scale

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.