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Finding the Fourth Proportional to 418,495.70, 577,499.54 and 227,507.42

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Solution

The fourth proportional to 418,495.70, 577,499.54 and 227,507.42 is: 313,946.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,495.70 : 577,499.54 = 227,507.42 : x
  2. Step 2: Convert to fraction form
    418,495.70/577,499.54 = 227,507.42/x
  3. Step 3: Cross multiply
    418,495.70x = 577,499.54 × 227,507.42
  4. Step 4: Simplify right side
    418,495.70x = 131,385,426,371.55
  5. Step 5: Solve for x
    x = 131,385,426,371.55/418,495.70
  6. Step 6: Final answer
    x = 313,946.90

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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.