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Finding the Fourth Proportional to 339,643.28, 468,709.86 and 212,393.36

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Solution

The fourth proportional to 339,643.28, 468,709.86 and 212,393.36 is: 293,104.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,643.28 : 468,709.86 = 212,393.36 : x
  2. Step 2: Convert to fraction form
    339,643.28/468,709.86 = 212,393.36/x
  3. Step 3: Cross multiply
    339,643.28x = 468,709.86 × 212,393.36
  4. Step 4: Simplify right side
    339,643.28x = 99,550,862,030.53
  5. Step 5: Solve for x
    x = 99,550,862,030.53/339,643.28
  6. Step 6: Final answer
    x = 293,104.17

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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.