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Finding the Fourth Proportional to 462,468.84, 638,309.96 and 281,142.38

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Solution

The fourth proportional to 462,468.84, 638,309.96 and 281,142.38 is: 388,039.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,468.84 : 638,309.96 = 281,142.38 : x
  2. Step 2: Convert to fraction form
    462,468.84/638,309.96 = 281,142.38/x
  3. Step 3: Cross multiply
    462,468.84x = 638,309.96 × 281,142.38
  4. Step 4: Simplify right side
    462,468.84x = 179,455,976,734.84
  5. Step 5: Solve for x
    x = 179,455,976,734.84/462,468.84
  6. Step 6: Final answer
    x = 388,039.07

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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.