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Finding the Fourth Proportional to 263,572.40, 395,358.60 and 145,182.80

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Solution

The fourth proportional to 263,572.40, 395,358.60 and 145,182.80 is: 217,774.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,572.40 : 395,358.60 = 145,182.80 : x
  2. Step 2: Convert to fraction form
    263,572.40/395,358.60 = 145,182.80/x
  3. Step 3: Cross multiply
    263,572.40x = 395,358.60 × 145,182.80
  4. Step 4: Simplify right side
    263,572.40x = 57,399,268,552.08
  5. Step 5: Solve for x
    x = 57,399,268,552.08/263,572.40
  6. Step 6: Final answer
    x = 217,774.20

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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.