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Finding the Fourth Proportional to 312,550.59, 431,318.87 and 176,584.49

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Solution

The fourth proportional to 312,550.59, 431,318.87 and 176,584.49 is: 243,686.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,550.59 : 431,318.87 = 176,584.49 : x
  2. Step 2: Convert to fraction form
    312,550.59/431,318.87 = 176,584.49/x
  3. Step 3: Cross multiply
    312,550.59x = 431,318.87 × 176,584.49
  4. Step 4: Simplify right side
    312,550.59x = 76,164,220,971.19
  5. Step 5: Solve for x
    x = 76,164,220,971.19/312,550.59
  6. Step 6: Final answer
    x = 243,686.06

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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.