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Finding the Fourth Proportional to 371,329.56, 512,446.26 and 218,340.12

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Solution

The fourth proportional to 371,329.56, 512,446.26 and 218,340.12 is: 301,316.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,329.56 : 512,446.26 = 218,340.12 : x
  2. Step 2: Convert to fraction form
    371,329.56/512,446.26 = 218,340.12/x
  3. Step 3: Cross multiply
    371,329.56x = 512,446.26 × 218,340.12
  4. Step 4: Simplify right side
    371,329.56x = 111,887,577,901.95
  5. Step 5: Solve for x
    x = 111,887,577,901.95/371,329.56
  6. Step 6: Final answer
    x = 301,316.11

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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.