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Finding the Fourth Proportional to 266,111.68, 399,166.40 and 108,302.72

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Solution

The fourth proportional to 266,111.68, 399,166.40 and 108,302.72 is: 162,453.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,111.68 : 399,166.40 = 108,302.72 : x
  2. Step 2: Convert to fraction form
    266,111.68/399,166.40 = 108,302.72/x
  3. Step 3: Cross multiply
    266,111.68x = 399,166.40 × 108,302.72
  4. Step 4: Simplify right side
    266,111.68x = 43,230,806,852.61
  5. Step 5: Solve for x
    x = 43,230,806,852.61/266,111.68
  6. Step 6: Final answer
    x = 162,453.62

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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.