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Finding the Fourth Proportional to 371,674.74, 512,867.61 and 218,679.30

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Solution

The fourth proportional to 371,674.74, 512,867.61 and 218,679.30 is: 301,751.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,674.74 : 512,867.61 = 218,679.30 : x
  2. Step 2: Convert to fraction form
    371,674.74/512,867.61 = 218,679.30/x
  3. Step 3: Cross multiply
    371,674.74x = 512,867.61 × 218,679.30
  4. Step 4: Simplify right side
    371,674.74x = 112,153,529,947.47
  5. Step 5: Solve for x
    x = 112,153,529,947.47/371,674.74
  6. Step 6: Final answer
    x = 301,751.82

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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.