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Finding the Fourth Proportional to 418,393.79, 577,387.24 and 227,407.64

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Solution

The fourth proportional to 418,393.79, 577,387.24 and 227,407.64 is: 313,824.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,393.79 : 577,387.24 = 227,407.64 : x
  2. Step 2: Convert to fraction form
    418,393.79/577,387.24 = 227,407.64/x
  3. Step 3: Cross multiply
    418,393.79x = 577,387.24 × 227,407.64
  4. Step 4: Simplify right side
    418,393.79x = 131,302,266,159.06
  5. Step 5: Solve for x
    x = 131,302,266,159.06/418,393.79
  6. Step 6: Final answer
    x = 313,824.61

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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.