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Finding the Fourth Proportional to 312,468.42, 431,215.27 and 176,508.10

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Solution

The fourth proportional to 312,468.42, 431,215.27 and 176,508.10 is: 243,586.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,468.42 : 431,215.27 = 176,508.10 : x
  2. Step 2: Convert to fraction form
    312,468.42/431,215.27 = 176,508.10/x
  3. Step 3: Cross multiply
    312,468.42x = 431,215.27 × 176,508.10
  4. Step 4: Simplify right side
    312,468.42x = 76,112,988,096.44
  5. Step 5: Solve for x
    x = 76,112,988,096.44/312,468.42
  6. Step 6: Final answer
    x = 243,586.17

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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.