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Finding the Fourth Proportional to 371,446.61, 512,598.38 and 218,491.47

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Solution

The fourth proportional to 371,446.61, 512,598.38 and 218,491.47 is: 301,519.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,446.61 : 512,598.38 = 218,491.47 : x
  2. Step 2: Convert to fraction form
    371,446.61/512,598.38 = 218,491.47/x
  3. Step 3: Cross multiply
    371,446.61x = 512,598.38 × 218,491.47
  4. Step 4: Simplify right side
    371,446.61x = 111,998,372,473.36
  5. Step 5: Solve for x
    x = 111,998,372,473.36/371,446.61
  6. Step 6: Final answer
    x = 301,519.44

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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.