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Finding the Fourth Proportional to 287,993.34, 431,996.22 and 88,309.31

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Solution

The fourth proportional to 287,993.34, 431,996.22 and 88,309.31 is: 132,465.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,993.34 : 431,996.22 = 88,309.31 : x
  2. Step 2: Convert to fraction form
    287,993.34/431,996.22 = 88,309.31/x
  3. Step 3: Cross multiply
    287,993.34x = 431,996.22 × 88,309.31
  4. Step 4: Simplify right side
    287,993.34x = 38,149,285,950.83
  5. Step 5: Solve for x
    x = 38,149,285,950.83/287,993.34
  6. Step 6: Final answer
    x = 132,465.86

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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.