Home / 261,341.89-391,966.09-69,217.64

Finding the Fourth Proportional to 261,341.89, 391,966.09 and 69,217.64

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Solution

The fourth proportional to 261,341.89, 391,966.09 and 69,217.64 is: 103,814.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,341.89 : 391,966.09 = 69,217.64 : x
  2. Step 2: Convert to fraction form
    261,341.89/391,966.09 = 69,217.64/x
  3. Step 3: Cross multiply
    261,341.89x = 391,966.09 × 69,217.64
  4. Step 4: Simplify right side
    261,341.89x = 27,130,967,046.83
  5. Step 5: Solve for x
    x = 27,130,967,046.83/261,341.89
  6. Step 6: Final answer
    x = 103,814.08

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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.