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Finding the Fourth Proportional to 312,490.40, 431,235.43 and 174,669.17

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Solution

The fourth proportional to 312,490.40, 431,235.43 and 174,669.17 is: 241,042.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,490.40 : 431,235.43 = 174,669.17 : x
  2. Step 2: Convert to fraction form
    312,490.40/431,235.43 = 174,669.17/x
  3. Step 3: Cross multiply
    312,490.40x = 431,235.43 × 174,669.17
  4. Step 4: Simplify right side
    312,490.40x = 75,323,532,039.84
  5. Step 5: Solve for x
    x = 75,323,532,039.84/312,490.40
  6. Step 6: Final answer
    x = 241,042.71

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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.