Home / 261,317.34-391,481.51-154,381.55

Finding the Fourth Proportional to 261,317.34, 391,481.51 and 154,381.55

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Solution

The fourth proportional to 261,317.34, 391,481.51 and 154,381.55 is: 231,280.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,317.34 : 391,481.51 = 154,381.55 : x
  2. Step 2: Convert to fraction form
    261,317.34/391,481.51 = 154,381.55/x
  3. Step 3: Cross multiply
    261,317.34x = 391,481.51 × 154,381.55
  4. Step 4: Simplify right side
    261,317.34x = 60,437,519,580.83
  5. Step 5: Solve for x
    x = 60,437,519,580.83/261,317.34
  6. Step 6: Final answer
    x = 231,280.17

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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.