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Finding the Fourth Proportional to 255,903.67, 353,147.54 and 142,733.71

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Solution

The fourth proportional to 255,903.67, 353,147.54 and 142,733.71 is: 196,972.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,903.67 : 353,147.54 = 142,733.71 : x
  2. Step 2: Convert to fraction form
    255,903.67/353,147.54 = 142,733.71/x
  3. Step 3: Cross multiply
    255,903.67x = 353,147.54 × 142,733.71
  4. Step 4: Simplify right side
    255,903.67x = 50,406,058,561.57
  5. Step 5: Solve for x
    x = 50,406,058,561.57/255,903.67
  6. Step 6: Final answer
    x = 196,972.78

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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.