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Finding the Fourth Proportional to 266,480.16, 399,746.88 and 76,945.08

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Solution

The fourth proportional to 266,480.16, 399,746.88 and 76,945.08 is: 115,425.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,480.16 : 399,746.88 = 76,945.08 : x
  2. Step 2: Convert to fraction form
    266,480.16/399,746.88 = 76,945.08/x
  3. Step 3: Cross multiply
    266,480.16x = 399,746.88 × 76,945.08
  4. Step 4: Simplify right side
    266,480.16x = 30,758,555,661.35
  5. Step 5: Solve for x
    x = 30,758,555,661.35/266,480.16
  6. Step 6: Final answer
    x = 115,425.31

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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.