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Finding the Fourth Proportional to 266,557.35, 399,776.99 and 76,976.45

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Solution

The fourth proportional to 266,557.35, 399,776.99 and 76,976.45 is: 115,447.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,557.35 : 399,776.99 = 76,976.45 : x
  2. Step 2: Convert to fraction form
    266,557.35/399,776.99 = 76,976.45/x
  3. Step 3: Cross multiply
    266,557.35x = 399,776.99 × 76,976.45
  4. Step 4: Simplify right side
    266,557.35x = 30,773,411,675.44
  5. Step 5: Solve for x
    x = 30,773,411,675.44/266,557.35
  6. Step 6: Final answer
    x = 115,447.62

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1.5x scale

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.