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Finding the Fourth Proportional to 418,313.53, 577,276.32 and 227,326.90

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Solution

The fourth proportional to 418,313.53, 577,276.32 and 227,326.90 is: 313,713.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,313.53 : 577,276.32 = 227,326.90 : x
  2. Step 2: Convert to fraction form
    418,313.53/577,276.32 = 227,326.90/x
  3. Step 3: Cross multiply
    418,313.53x = 577,276.32 × 227,326.90
  4. Step 4: Simplify right side
    418,313.53x = 131,230,436,269.01
  5. Step 5: Solve for x
    x = 131,230,436,269.01/418,313.53
  6. Step 6: Final answer
    x = 313,713.10

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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.