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Finding the Fourth Proportional to 210,326.60, 315,489.90 and 163,087.40

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Solution

The fourth proportional to 210,326.60, 315,489.90 and 163,087.40 is: 244,631.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,326.60 : 315,489.90 = 163,087.40 : x
  2. Step 2: Convert to fraction form
    210,326.60/315,489.90 = 163,087.40/x
  3. Step 3: Cross multiply
    210,326.60x = 315,489.90 × 163,087.40
  4. Step 4: Simplify right side
    210,326.60x = 51,452,427,517.26
  5. Step 5: Solve for x
    x = 51,452,427,517.26/210,326.60
  6. Step 6: Final answer
    x = 244,631.10

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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.