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Finding the Fourth Proportional to 287,853.48, 431,809.02 and 88,171.56

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Solution

The fourth proportional to 287,853.48, 431,809.02 and 88,171.56 is: 132,266.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,853.48 : 431,809.02 = 88,171.56 : x
  2. Step 2: Convert to fraction form
    287,853.48/431,809.02 = 88,171.56/x
  3. Step 3: Cross multiply
    287,853.48x = 431,809.02 × 88,171.56
  4. Step 4: Simplify right side
    287,853.48x = 38,073,274,915.47
  5. Step 5: Solve for x
    x = 38,073,274,915.47/287,853.48
  6. Step 6: Final answer
    x = 132,266.16

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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.