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Finding the Fourth Proportional to 465,959.61, 643,240.91 and 351,284.87

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Solution

The fourth proportional to 465,959.61, 643,240.91 and 351,284.87 is: 484,936.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,959.61 : 643,240.91 = 351,284.87 : x
  2. Step 2: Convert to fraction form
    465,959.61/643,240.91 = 351,284.87/x
  3. Step 3: Cross multiply
    465,959.61x = 643,240.91 × 351,284.87
  4. Step 4: Simplify right side
    465,959.61x = 225,960,799,448.03
  5. Step 5: Solve for x
    x = 225,960,799,448.03/465,959.61
  6. Step 6: Final answer
    x = 484,936.45

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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.