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Finding the Fourth Proportional to 231,780.80, 347,233.80 and 216,034.40

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Solution

The fourth proportional to 231,780.80, 347,233.80 and 216,034.40 is: 323,643.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,780.80 : 347,233.80 = 216,034.40 : x
  2. Step 2: Convert to fraction form
    231,780.80/347,233.80 = 216,034.40/x
  3. Step 3: Cross multiply
    231,780.80x = 347,233.80 × 216,034.40
  4. Step 4: Simplify right side
    231,780.80x = 75,014,445,642.72
  5. Step 5: Solve for x
    x = 75,014,445,642.72/231,780.80
  6. Step 6: Final answer
    x = 323,643.92

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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.