Home / 261,186,335.71-391,951,884.89-138,450,843.79

Finding the Fourth Proportional to 261,186,335.71, 391,951,884.89 and 138,450,843.79

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Solution

The fourth proportional to 261,186,335.71, 391,951,884.89 and 138,450,843.79 is: 207,767,642.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,186,335.71 : 391,951,884.89 = 138,450,843.79 : x
  2. Step 2: Convert to fraction form
    261,186,335.71/391,951,884.89 = 138,450,843.79/x
  3. Step 3: Cross multiply
    261,186,335.71x = 391,951,884.89 × 138,450,843.79
  4. Step 4: Simplify right side
    261,186,335.71x = 54,266,069,187,467,696
  5. Step 5: Solve for x
    x = 54,266,069,187,467,696/261,186,335.71
  6. Step 6: Final answer
    x = 207,767,642.36

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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.