Home / 261,186,357.59-391,951,917.71-138,450,865.67

Finding the Fourth Proportional to 261,186,357.59, 391,951,917.71 and 138,450,865.67

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Solution

The fourth proportional to 261,186,357.59, 391,951,917.71 and 138,450,865.67 is: 207,767,675.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,186,357.59 : 391,951,917.71 = 138,450,865.67 : x
  2. Step 2: Convert to fraction form
    261,186,357.59/391,951,917.71 = 138,450,865.67/x
  3. Step 3: Cross multiply
    261,186,357.59x = 391,951,917.71 × 138,450,865.67
  4. Step 4: Simplify right side
    261,186,357.59x = 54,266,082,306,669,344
  5. Step 5: Solve for x
    x = 54,266,082,306,669,344/261,186,357.59
  6. Step 6: Final answer
    x = 207,767,675.19

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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.