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Finding the Fourth Proportional to 230,719.80, 346,079.70 and 191,839.80

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Solution

The fourth proportional to 230,719.80, 346,079.70 and 191,839.80 is: 287,759.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,719.80 : 346,079.70 = 191,839.80 : x
  2. Step 2: Convert to fraction form
    230,719.80/346,079.70 = 191,839.80/x
  3. Step 3: Cross multiply
    230,719.80x = 346,079.70 × 191,839.80
  4. Step 4: Simplify right side
    230,719.80x = 66,391,860,432.06
  5. Step 5: Solve for x
    x = 66,391,860,432.06/230,719.80
  6. Step 6: Final answer
    x = 287,759.70

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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.