Home / 287,918.98-431,472.50-135,953.92

Finding the Fourth Proportional to 287,918.98, 431,472.50 and 135,953.92

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Solution

The fourth proportional to 287,918.98, 431,472.50 and 135,953.92 is: 203,739.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,918.98 : 431,472.50 = 135,953.92 : x
  2. Step 2: Convert to fraction form
    287,918.98/431,472.50 = 135,953.92/x
  3. Step 3: Cross multiply
    287,918.98x = 431,472.50 × 135,953.92
  4. Step 4: Simplify right side
    287,918.98x = 58,660,377,747.20
  5. Step 5: Solve for x
    x = 58,660,377,747.20/287,918.98
  6. Step 6: Final answer
    x = 203,739.18

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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.