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Finding the Fourth Proportional to 666,615.75, 999,923.63 and 167,979.75

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Solution

The fourth proportional to 666,615.75, 999,923.63 and 167,979.75 is: 251,969.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,615.75 : 999,923.63 = 167,979.75 : x
  2. Step 2: Convert to fraction form
    666,615.75/999,923.63 = 167,979.75/x
  3. Step 3: Cross multiply
    666,615.75x = 999,923.63 × 167,979.75
  4. Step 4: Simplify right side
    666,615.75x = 167,966,920,546.59
  5. Step 5: Solve for x
    x = 167,966,920,546.59/666,615.75
  6. Step 6: Final answer
    x = 251,969.63

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Similar ratio
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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.