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Finding the Fourth Proportional to 341,716.40, 512,995.80 and 215,356.40

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Solution

The fourth proportional to 341,716.40, 512,995.80 and 215,356.40 is: 323,300.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,716.40 : 512,995.80 = 215,356.40 : x
  2. Step 2: Convert to fraction form
    341,716.40/512,995.80 = 215,356.40/x
  3. Step 3: Cross multiply
    341,716.40x = 512,995.80 × 215,356.40
  4. Step 4: Simplify right side
    341,716.40x = 110,476,928,703.12
  5. Step 5: Solve for x
    x = 110,476,928,703.12/341,716.40
  6. Step 6: Final answer
    x = 323,300.05

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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.