Home / 261,267.47-391,967.07-74,278.97

Finding the Fourth Proportional to 261,267.47, 391,967.07 and 74,278.97

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Solution

The fourth proportional to 261,267.47, 391,967.07 and 74,278.97 is: 111,437.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,267.47 : 391,967.07 = 74,278.97 : x
  2. Step 2: Convert to fraction form
    261,267.47/391,967.07 = 74,278.97/x
  3. Step 3: Cross multiply
    261,267.47x = 391,967.07 × 74,278.97
  4. Step 4: Simplify right side
    261,267.47x = 29,114,911,213.44
  5. Step 5: Solve for x
    x = 29,114,911,213.44/261,267.47
  6. Step 6: Final answer
    x = 111,437.18

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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.