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Finding the Fourth Proportional to 217,029.40, 325,641.30 and 98,639.80

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Solution

The fourth proportional to 217,029.40, 325,641.30 and 98,639.80 is: 148,003.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,029.40 : 325,641.30 = 98,639.80 : x
  2. Step 2: Convert to fraction form
    217,029.40/325,641.30 = 98,639.80/x
  3. Step 3: Cross multiply
    217,029.40x = 325,641.30 × 98,639.80
  4. Step 4: Simplify right side
    217,029.40x = 32,121,192,703.74
  5. Step 5: Solve for x
    x = 32,121,192,703.74/217,029.40
  6. Step 6: Final answer
    x = 148,003.88

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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.