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Finding the Fourth Proportional to 418,356.88, 577,332.48 and 227,370.72

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Solution

The fourth proportional to 418,356.88, 577,332.48 and 227,370.72 is: 313,771.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,356.88 : 577,332.48 = 227,370.72 : x
  2. Step 2: Convert to fraction form
    418,356.88/577,332.48 = 227,370.72/x
  3. Step 3: Cross multiply
    418,356.88x = 577,332.48 × 227,370.72
  4. Step 4: Simplify right side
    418,356.88x = 131,268,501,656.99
  5. Step 5: Solve for x
    x = 131,268,501,656.99/418,356.88
  6. Step 6: Final answer
    x = 313,771.59

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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.