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Finding the Fourth Proportional to 268,879.20, 403,318.80 and 169,346.40

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Solution

The fourth proportional to 268,879.20, 403,318.80 and 169,346.40 is: 254,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,879.20 : 403,318.80 = 169,346.40 : x
  2. Step 2: Convert to fraction form
    268,879.20/403,318.80 = 169,346.40/x
  3. Step 3: Cross multiply
    268,879.20x = 403,318.80 × 169,346.40
  4. Step 4: Simplify right side
    268,879.20x = 68,300,586,832.32
  5. Step 5: Solve for x
    x = 68,300,586,832.32/268,879.20
  6. Step 6: Final answer
    x = 254,019.60

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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.