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Finding the Fourth Proportional to 462,448.07, 638,281.28 and 281,121.63

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Solution

The fourth proportional to 462,448.07, 638,281.28 and 281,121.63 is: 388,010.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,448.07 : 638,281.28 = 281,121.63 : x
  2. Step 2: Convert to fraction form
    462,448.07/638,281.28 = 281,121.63/x
  3. Step 3: Cross multiply
    462,448.07x = 638,281.28 × 281,121.63
  4. Step 4: Simplify right side
    462,448.07x = 179,434,673,832.09
  5. Step 5: Solve for x
    x = 179,434,673,832.09/462,448.07
  6. Step 6: Final answer
    x = 388,010.43

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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.