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Finding the Fourth Proportional to 287,813.98, 431,722.02 and 88,133.56

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Solution

The fourth proportional to 287,813.98, 431,722.02 and 88,133.56 is: 132,200.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,813.98 : 431,722.02 = 88,133.56 : x
  2. Step 2: Convert to fraction form
    287,813.98/431,722.02 = 88,133.56/x
  3. Step 3: Cross multiply
    287,813.98x = 431,722.02 × 88,133.56
  4. Step 4: Simplify right side
    287,813.98x = 38,049,198,552.99
  5. Step 5: Solve for x
    x = 38,049,198,552.99/287,813.98
  6. Step 6: Final answer
    x = 132,200.66

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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.