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Finding the Fourth Proportional to 391,244.80, 586,186.80 and 180,450.40

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Solution

The fourth proportional to 391,244.80, 586,186.80 and 180,450.40 is: 270,361.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,244.80 : 586,186.80 = 180,450.40 : x
  2. Step 2: Convert to fraction form
    391,244.80/586,186.80 = 180,450.40/x
  3. Step 3: Cross multiply
    391,244.80x = 586,186.80 × 180,450.40
  4. Step 4: Simplify right side
    391,244.80x = 105,777,642,534.72
  5. Step 5: Solve for x
    x = 105,777,642,534.72/391,244.80
  6. Step 6: Final answer
    x = 270,361.79

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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.