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Finding the Fourth Proportional to 266,656.40, 400,243.80 and 161,680.40

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Solution

The fourth proportional to 266,656.40, 400,243.80 and 161,680.40 is: 242,677.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,656.40 : 400,243.80 = 161,680.40 : x
  2. Step 2: Convert to fraction form
    266,656.40/400,243.80 = 161,680.40/x
  3. Step 3: Cross multiply
    266,656.40x = 400,243.80 × 161,680.40
  4. Step 4: Simplify right side
    266,656.40x = 64,711,577,681.52
  5. Step 5: Solve for x
    x = 64,711,577,681.52/266,656.40
  6. Step 6: Final answer
    x = 242,677.76

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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.