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Finding the Fourth Proportional to 312,086.84, 430,678.03 and 168,843.81

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Solution

The fourth proportional to 312,086.84, 430,678.03 and 168,843.81 is: 233,003.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,086.84 : 430,678.03 = 168,843.81 : x
  2. Step 2: Convert to fraction form
    312,086.84/430,678.03 = 168,843.81/x
  3. Step 3: Cross multiply
    312,086.84x = 430,678.03 × 168,843.81
  4. Step 4: Simplify right side
    312,086.84x = 72,717,319,046.38
  5. Step 5: Solve for x
    x = 72,717,319,046.38/312,086.84
  6. Step 6: Final answer
    x = 233,003.48

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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.