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Finding the Fourth Proportional to 203,663.57, 305,405.13 and 108,870.78

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Solution

The fourth proportional to 203,663.57, 305,405.13 and 108,870.78 is: 163,257.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,663.57 : 305,405.13 = 108,870.78 : x
  2. Step 2: Convert to fraction form
    203,663.57/305,405.13 = 108,870.78/x
  3. Step 3: Cross multiply
    203,663.57x = 305,405.13 × 108,870.78
  4. Step 4: Simplify right side
    203,663.57x = 33,249,696,272.64
  5. Step 5: Solve for x
    x = 33,249,696,272.64/203,663.57
  6. Step 6: Final answer
    x = 163,257.95

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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.