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Finding the Fourth Proportional to 230,385.15, 317,892.98 and 128,388.26

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Solution

The fourth proportional to 230,385.15, 317,892.98 and 128,388.26 is: 177,154.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,385.15 : 317,892.98 = 128,388.26 : x
  2. Step 2: Convert to fraction form
    230,385.15/317,892.98 = 128,388.26/x
  3. Step 3: Cross multiply
    230,385.15x = 317,892.98 × 128,388.26
  4. Step 4: Simplify right side
    230,385.15x = 40,813,724,337.01
  5. Step 5: Solve for x
    x = 40,813,724,337.01/230,385.15
  6. Step 6: Final answer
    x = 177,154.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.