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Finding the Fourth Proportional to 144,833.80, 217,250.70 and 138,928.90

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Solution

The fourth proportional to 144,833.80, 217,250.70 and 138,928.90 is: 208,393.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,833.80 : 217,250.70 = 138,928.90 : x
  2. Step 2: Convert to fraction form
    144,833.80/217,250.70 = 138,928.90/x
  3. Step 3: Cross multiply
    144,833.80x = 217,250.70 × 138,928.90
  4. Step 4: Simplify right side
    144,833.80x = 30,182,400,775.23
  5. Step 5: Solve for x
    x = 30,182,400,775.23/144,833.80
  6. Step 6: Final answer
    x = 208,393.35

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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.