Home / 287,845.40-431,768.10-88,164.20

Finding the Fourth Proportional to 287,845.40, 431,768.10 and 88,164.20

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Solution

The fourth proportional to 287,845.40, 431,768.10 and 88,164.20 is: 132,246.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,845.40 : 431,768.10 = 88,164.20 : x
  2. Step 2: Convert to fraction form
    287,845.40/431,768.10 = 88,164.20/x
  3. Step 3: Cross multiply
    287,845.40x = 431,768.10 × 88,164.20
  4. Step 4: Simplify right side
    287,845.40x = 38,066,489,122.02
  5. Step 5: Solve for x
    x = 38,066,489,122.02/287,845.40
  6. Step 6: Final answer
    x = 132,246.30

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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.