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Finding the Fourth Proportional to 418,549.68, 628,010.10 and 238,628.52

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Solution

The fourth proportional to 418,549.68, 628,010.10 and 238,628.52 is: 358,048.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,549.68 : 628,010.10 = 238,628.52 : x
  2. Step 2: Convert to fraction form
    418,549.68/628,010.10 = 238,628.52/x
  3. Step 3: Cross multiply
    418,549.68x = 628,010.10 × 238,628.52
  4. Step 4: Simplify right side
    418,549.68x = 149,861,120,708.05
  5. Step 5: Solve for x
    x = 149,861,120,708.05/418,549.68
  6. Step 6: Final answer
    x = 358,048.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.