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Finding the Fourth Proportional to 418,355.79, 577,327.81 and 227,370.55

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Solution

The fourth proportional to 418,355.79, 577,327.81 and 227,370.55 is: 313,769.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,355.79 : 577,327.81 = 227,370.55 : x
  2. Step 2: Convert to fraction form
    418,355.79/577,327.81 = 227,370.55/x
  3. Step 3: Cross multiply
    418,355.79x = 577,327.81 × 227,370.55
  4. Step 4: Simplify right side
    418,355.79x = 131,267,341,690.00
  5. Step 5: Solve for x
    x = 131,267,341,690.00/418,355.79
  6. Step 6: Final answer
    x = 313,769.63

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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.