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Finding the Fourth Proportional to 255,290.28, 352,308 and 140,580.76

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Solution

The fourth proportional to 255,290.28, 352,308 and 140,580.76 is: 194,005.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,290.28 : 352,308 = 140,580.76 : x
  2. Step 2: Convert to fraction form
    255,290.28/352,308 = 140,580.76/x
  3. Step 3: Cross multiply
    255,290.28x = 352,308 × 140,580.76
  4. Step 4: Simplify right side
    255,290.28x = 49,527,726,394.08
  5. Step 5: Solve for x
    x = 49,527,726,394.08/255,290.28
  6. Step 6: Final answer
    x = 194,005.53

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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.