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Finding the Fourth Proportional to 266,987.46, 400,398.54 and 77,461.74

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Solution

The fourth proportional to 266,987.46, 400,398.54 and 77,461.74 is: 116,168.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,987.46 : 400,398.54 = 77,461.74 : x
  2. Step 2: Convert to fraction form
    266,987.46/400,398.54 = 77,461.74/x
  3. Step 3: Cross multiply
    266,987.46x = 400,398.54 × 77,461.74
  4. Step 4: Simplify right side
    266,987.46x = 31,015,567,601.86
  5. Step 5: Solve for x
    x = 31,015,567,601.86/266,987.46
  6. Step 6: Final answer
    x = 116,168.63

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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.