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Finding the Fourth Proportional to 255,879, 353,113.02 and 142,701.75

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Solution

The fourth proportional to 255,879, 353,113.02 and 142,701.75 is: 196,928.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,879 : 353,113.02 = 142,701.75 : x
  2. Step 2: Convert to fraction form
    255,879/353,113.02 = 142,701.75/x
  3. Step 3: Cross multiply
    255,879x = 353,113.02 × 142,701.75
  4. Step 4: Simplify right side
    255,879x = 50,389,845,901.79
  5. Step 5: Solve for x
    x = 50,389,845,901.79/255,879
  6. Step 6: Final answer
    x = 196,928.42

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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.