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Finding the Fourth Proportional to 287,810.45, 431,716.72 and 88,130.03

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Solution

The fourth proportional to 287,810.45, 431,716.72 and 88,130.03 is: 132,195.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,810.45 : 431,716.72 = 88,130.03 : x
  2. Step 2: Convert to fraction form
    287,810.45/431,716.72 = 88,130.03/x
  3. Step 3: Cross multiply
    287,810.45x = 431,716.72 × 88,130.03
  4. Step 4: Simplify right side
    287,810.45x = 38,047,205,271.44
  5. Step 5: Solve for x
    x = 38,047,205,271.44/287,810.45
  6. Step 6: Final answer
    x = 132,195.36

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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.