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Finding the Fourth Proportional to 266,407.92, 399,611.88 and 108,648.72

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Solution

The fourth proportional to 266,407.92, 399,611.88 and 108,648.72 is: 162,973.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,407.92 : 399,611.88 = 108,648.72 : x
  2. Step 2: Convert to fraction form
    266,407.92/399,611.88 = 108,648.72/x
  3. Step 3: Cross multiply
    266,407.92x = 399,611.88 × 108,648.72
  4. Step 4: Simplify right side
    266,407.92x = 43,417,319,258.79
  5. Step 5: Solve for x
    x = 43,417,319,258.79/266,407.92
  6. Step 6: Final answer
    x = 162,973.08

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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.