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Finding the Fourth Proportional to 266,271.81, 399,407.72 and 66,592.19

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Solution

The fourth proportional to 266,271.81, 399,407.72 and 66,592.19 is: 99,888.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,271.81 : 399,407.72 = 66,592.19 : x
  2. Step 2: Convert to fraction form
    266,271.81/399,407.72 = 66,592.19/x
  3. Step 3: Cross multiply
    266,271.81x = 399,407.72 × 66,592.19
  4. Step 4: Simplify right side
    266,271.81x = 26,597,432,447.71
  5. Step 5: Solve for x
    x = 26,597,432,447.71/266,271.81
  6. Step 6: Final answer
    x = 99,888.28

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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.