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Finding the Fourth Proportional to 266,909.61, 399,949.70 and 168,206.25

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Solution

The fourth proportional to 266,909.61, 399,949.70 and 168,206.25 is: 252,048.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,909.61 : 399,949.70 = 168,206.25 : x
  2. Step 2: Convert to fraction form
    266,909.61/399,949.70 = 168,206.25/x
  3. Step 3: Cross multiply
    266,909.61x = 399,949.70 × 168,206.25
  4. Step 4: Simplify right side
    266,909.61x = 67,274,038,384.59
  5. Step 5: Solve for x
    x = 67,274,038,384.59/266,909.61
  6. Step 6: Final answer
    x = 252,048.02

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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.