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Finding the Fourth Proportional to 211,620.80, 316,912.80 and 141,118.40

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Solution

The fourth proportional to 211,620.80, 316,912.80 and 141,118.40 is: 211,331.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,620.80 : 316,912.80 = 141,118.40 : x
  2. Step 2: Convert to fraction form
    211,620.80/316,912.80 = 141,118.40/x
  3. Step 3: Cross multiply
    211,620.80x = 316,912.80 × 141,118.40
  4. Step 4: Simplify right side
    211,620.80x = 44,722,227,275.52
  5. Step 5: Solve for x
    x = 44,722,227,275.52/211,620.80
  6. Step 6: Final answer
    x = 211,331.91

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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.