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Finding the Fourth Proportional to 266,472.78, 399,511.53 and 161,266.74

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Solution

The fourth proportional to 266,472.78, 399,511.53 and 161,266.74 is: 241,780.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,472.78 : 399,511.53 = 161,266.74 : x
  2. Step 2: Convert to fraction form
    266,472.78/399,511.53 = 161,266.74/x
  3. Step 3: Cross multiply
    266,472.78x = 399,511.53 × 161,266.74
  4. Step 4: Simplify right side
    266,472.78x = 64,427,922,035.51
  5. Step 5: Solve for x
    x = 64,427,922,035.51/266,472.78
  6. Step 6: Final answer
    x = 241,780.50

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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.