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Finding the Fourth Proportional to 418,374.90, 577,357.44 and 227,388.30

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Solution

The fourth proportional to 418,374.90, 577,357.44 and 227,388.30 is: 313,795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,374.90 : 577,357.44 = 227,388.30 : x
  2. Step 2: Convert to fraction form
    418,374.90/577,357.44 = 227,388.30/x
  3. Step 3: Cross multiply
    418,374.90x = 577,357.44 × 227,388.30
  4. Step 4: Simplify right side
    418,374.90x = 131,284,326,773.95
  5. Step 5: Solve for x
    x = 131,284,326,773.95/418,374.90
  6. Step 6: Final answer
    x = 313,795.90

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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.