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Finding the Fourth Proportional to 170,879.20, 256,318.80 and 162,325.60

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Solution

The fourth proportional to 170,879.20, 256,318.80 and 162,325.60 is: 243,488.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,879.20 : 256,318.80 = 162,325.60 : x
  2. Step 2: Convert to fraction form
    170,879.20/256,318.80 = 162,325.60/x
  3. Step 3: Cross multiply
    170,879.20x = 256,318.80 × 162,325.60
  4. Step 4: Simplify right side
    170,879.20x = 41,607,103,001.28
  5. Step 5: Solve for x
    x = 41,607,103,001.28/170,879.20
  6. Step 6: Final answer
    x = 243,488.40

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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.