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Finding the Fourth Proportional to 312,706.58, 431,535.44 and 169,466.61

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Solution

The fourth proportional to 312,706.58, 431,535.44 and 169,466.61 is: 233,864.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,706.58 : 431,535.44 = 169,466.61 : x
  2. Step 2: Convert to fraction form
    312,706.58/431,535.44 = 169,466.61/x
  3. Step 3: Cross multiply
    312,706.58x = 431,535.44 × 169,466.61
  4. Step 4: Simplify right side
    312,706.58x = 73,130,850,153.58
  5. Step 5: Solve for x
    x = 73,130,850,153.58/312,706.58
  6. Step 6: Final answer
    x = 233,864.13

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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.