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Finding the Fourth Proportional to 418,710.42, 577,803.78 and 227,723.76

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Solution

The fourth proportional to 418,710.42, 577,803.78 and 227,723.76 is: 314,249.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,710.42 : 577,803.78 = 227,723.76 : x
  2. Step 2: Convert to fraction form
    418,710.42/577,803.78 = 227,723.76/x
  3. Step 3: Cross multiply
    418,710.42x = 577,803.78 × 227,723.76
  4. Step 4: Simplify right side
    418,710.42x = 131,579,649,323.81
  5. Step 5: Solve for x
    x = 131,579,649,323.81/418,710.42
  6. Step 6: Final answer
    x = 314,249.76

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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.