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Finding the Fourth Proportional to 418,710.28, 577,970.50 and 248,944

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Solution

The fourth proportional to 418,710.28, 577,970.50 and 248,944 is: 343,632.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,710.28 : 577,970.50 = 248,944 : x
  2. Step 2: Convert to fraction form
    418,710.28/577,970.50 = 248,944/x
  3. Step 3: Cross multiply
    418,710.28x = 577,970.50 × 248,944
  4. Step 4: Simplify right side
    418,710.28x = 143,882,288,152
  5. Step 5: Solve for x
    x = 143,882,288,152/418,710.28
  6. Step 6: Final answer
    x = 343,632.09

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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.