Home / 287,947.47-431,570.95-203,731.92

Finding the Fourth Proportional to 287,947.47, 431,570.95 and 203,731.92

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Solution

The fourth proportional to 287,947.47, 431,570.95 and 203,731.92 is: 305,350.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,947.47 : 431,570.95 = 203,731.92 : x
  2. Step 2: Convert to fraction form
    287,947.47/431,570.95 = 203,731.92/x
  3. Step 3: Cross multiply
    287,947.47x = 431,570.95 × 203,731.92
  4. Step 4: Simplify right side
    287,947.47x = 87,924,777,750.39
  5. Step 5: Solve for x
    x = 87,924,777,750.39/287,947.47
  6. Step 6: Final answer
    x = 305,350.06

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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.