Home / 330,523.47-456,112.89-187,329.78

Finding the Fourth Proportional to 330,523.47, 456,112.89 and 187,329.78

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Solution

The fourth proportional to 330,523.47, 456,112.89 and 187,329.78 is: 258,509.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,523.47 : 456,112.89 = 187,329.78 : x
  2. Step 2: Convert to fraction form
    330,523.47/456,112.89 = 187,329.78/x
  3. Step 3: Cross multiply
    330,523.47x = 456,112.89 × 187,329.78
  4. Step 4: Simplify right side
    330,523.47x = 85,443,527,338.86
  5. Step 5: Solve for x
    x = 85,443,527,338.86/330,523.47
  6. Step 6: Final answer
    x = 258,509.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.