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Finding the Fourth Proportional to 287,848.80, 431,805.60 and 88,167.60

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Solution

The fourth proportional to 287,848.80, 431,805.60 and 88,167.60 is: 132,261.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,848.80 : 431,805.60 = 88,167.60 : x
  2. Step 2: Convert to fraction form
    287,848.80/431,805.60 = 88,167.60/x
  3. Step 3: Cross multiply
    287,848.80x = 431,805.60 × 88,167.60
  4. Step 4: Simplify right side
    287,848.80x = 38,071,263,418.56
  5. Step 5: Solve for x
    x = 38,071,263,418.56/287,848.80
  6. Step 6: Final answer
    x = 132,261.32

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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.