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Finding the Fourth Proportional to 312,483.99, 431,229.92 and 169,245.75

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Solution

The fourth proportional to 312,483.99, 431,229.92 and 169,245.75 is: 233,560.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,483.99 : 431,229.92 = 169,245.75 : x
  2. Step 2: Convert to fraction form
    312,483.99/431,229.92 = 169,245.75/x
  3. Step 3: Cross multiply
    312,483.99x = 431,229.92 × 169,245.75
  4. Step 4: Simplify right side
    312,483.99x = 72,983,830,386.61
  5. Step 5: Solve for x
    x = 72,983,830,386.61/312,483.99
  6. Step 6: Final answer
    x = 233,560.22

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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.