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Finding the Fourth Proportional to 256,305.40, 384,458.10 and 167,831.80

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Solution

The fourth proportional to 256,305.40, 384,458.10 and 167,831.80 is: 251,747.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,305.40 : 384,458.10 = 167,831.80 : x
  2. Step 2: Convert to fraction form
    256,305.40/384,458.10 = 167,831.80/x
  3. Step 3: Cross multiply
    256,305.40x = 384,458.10 × 167,831.80
  4. Step 4: Simplify right side
    256,305.40x = 64,524,294,947.58
  5. Step 5: Solve for x
    x = 64,524,294,947.58/256,305.40
  6. Step 6: Final answer
    x = 251,747.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.