Home / 261,110.73-391,624.05-71,526.78

Finding the Fourth Proportional to 261,110.73, 391,624.05 and 71,526.78

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Solution

The fourth proportional to 261,110.73, 391,624.05 and 71,526.78 is: 107,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,110.73 : 391,624.05 = 71,526.78 : x
  2. Step 2: Convert to fraction form
    261,110.73/391,624.05 = 71,526.78/x
  3. Step 3: Cross multiply
    261,110.73x = 391,624.05 × 71,526.78
  4. Step 4: Simplify right side
    261,110.73x = 28,011,607,267.06
  5. Step 5: Solve for x
    x = 28,011,607,267.06/261,110.73
  6. Step 6: Final answer
    x = 107,278.65

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1.5x scale

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.