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Finding the Fourth Proportional to 385,617.60, 578,183.40 and 161,134.20

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Solution

The fourth proportional to 385,617.60, 578,183.40 and 161,134.20 is: 241,599.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,617.60 : 578,183.40 = 161,134.20 : x
  2. Step 2: Convert to fraction form
    385,617.60/578,183.40 = 161,134.20/x
  3. Step 3: Cross multiply
    385,617.60x = 578,183.40 × 161,134.20
  4. Step 4: Simplify right side
    385,617.60x = 93,165,119,612.28
  5. Step 5: Solve for x
    x = 93,165,119,612.28/385,617.60
  6. Step 6: Final answer
    x = 241,599.76

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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.