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Finding the Fourth Proportional to 255,178.40, 352,143.42 and 140,454.56

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Solution

The fourth proportional to 255,178.40, 352,143.42 and 140,454.56 is: 193,825.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,178.40 : 352,143.42 = 140,454.56 : x
  2. Step 2: Convert to fraction form
    255,178.40/352,143.42 = 140,454.56/x
  3. Step 3: Cross multiply
    255,178.40x = 352,143.42 × 140,454.56
  4. Step 4: Simplify right side
    255,178.40x = 49,460,149,113.00
  5. Step 5: Solve for x
    x = 49,460,149,113.00/255,178.40
  6. Step 6: Final answer
    x = 193,825.77

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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.