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Finding the Fourth Proportional to 418,385.62, 577,376.67 and 227,399.05

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Solution

The fourth proportional to 418,385.62, 577,376.67 and 227,399.05 is: 313,813.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,385.62 : 577,376.67 = 227,399.05 : x
  2. Step 2: Convert to fraction form
    418,385.62/577,376.67 = 227,399.05/x
  3. Step 3: Cross multiply
    418,385.62x = 577,376.67 × 227,399.05
  4. Step 4: Simplify right side
    418,385.62x = 131,294,906,250.16
  5. Step 5: Solve for x
    x = 131,294,906,250.16/418,385.62
  6. Step 6: Final answer
    x = 313,813.14

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1.5x scale

Why These Related Problems?

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