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Finding the Fourth Proportional to 312,063.35, 430,658.46 and 176,089.37

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Solution

The fourth proportional to 312,063.35, 430,658.46 and 176,089.37 is: 243,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,063.35 : 430,658.46 = 176,089.37 : x
  2. Step 2: Convert to fraction form
    312,063.35/430,658.46 = 176,089.37/x
  3. Step 3: Cross multiply
    312,063.35x = 430,658.46 × 176,089.37
  4. Step 4: Simplify right side
    312,063.35x = 75,834,374,753.28
  5. Step 5: Solve for x
    x = 75,834,374,753.28/312,063.35
  6. Step 6: Final answer
    x = 243,009.56

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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.