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Finding the Fourth Proportional to 312,258.92, 430,918.38 and 169,018.92

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Solution

The fourth proportional to 312,258.92, 430,918.38 and 169,018.92 is: 233,246.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,258.92 : 430,918.38 = 169,018.92 : x
  2. Step 2: Convert to fraction form
    312,258.92/430,918.38 = 169,018.92/x
  3. Step 3: Cross multiply
    312,258.92x = 430,918.38 × 169,018.92
  4. Step 4: Simplify right side
    312,258.92x = 72,833,359,195.75
  5. Step 5: Solve for x
    x = 72,833,359,195.75/312,258.92
  6. Step 6: Final answer
    x = 233,246.69

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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.