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Finding the Fourth Proportional to 274,310.10, 411,465.15 and 239,318.10

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Solution

The fourth proportional to 274,310.10, 411,465.15 and 239,318.10 is: 358,977.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,310.10 : 411,465.15 = 239,318.10 : x
  2. Step 2: Convert to fraction form
    274,310.10/411,465.15 = 239,318.10/x
  3. Step 3: Cross multiply
    274,310.10x = 411,465.15 × 239,318.10
  4. Step 4: Simplify right side
    274,310.10x = 98,471,057,914.22
  5. Step 5: Solve for x
    x = 98,471,057,914.22/274,310.10
  6. Step 6: Final answer
    x = 358,977.15

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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.