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Finding the Fourth Proportional to 418,478.40, 577,505.90 and 227,495.89

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Solution

The fourth proportional to 418,478.40, 577,505.90 and 227,495.89 is: 313,947.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,478.40 : 577,505.90 = 227,495.89 : x
  2. Step 2: Convert to fraction form
    418,478.40/577,505.90 = 227,495.89/x
  3. Step 3: Cross multiply
    418,478.40x = 577,505.90 × 227,495.89
  4. Step 4: Simplify right side
    418,478.40x = 131,380,219,991.37
  5. Step 5: Solve for x
    x = 131,380,219,991.37/418,478.40
  6. Step 6: Final answer
    x = 313,947.43

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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.