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Finding the Fourth Proportional to 287,679.92, 431,504.35 and 88,000.33

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Solution

The fourth proportional to 287,679.92, 431,504.35 and 88,000.33 is: 131,995.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,679.92 : 431,504.35 = 88,000.33 : x
  2. Step 2: Convert to fraction form
    287,679.92/431,504.35 = 88,000.33/x
  3. Step 3: Cross multiply
    287,679.92x = 431,504.35 × 88,000.33
  4. Step 4: Simplify right side
    287,679.92x = 37,972,525,196.44
  5. Step 5: Solve for x
    x = 37,972,525,196.44/287,679.92
  6. Step 6: Final answer
    x = 131,995.74

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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.