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Finding the Fourth Proportional to 487,625.67, 672,886.74 and 272,724.22

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Solution

The fourth proportional to 487,625.67, 672,886.74 and 272,724.22 is: 376,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,625.67 : 672,886.74 = 272,724.22 : x
  2. Step 2: Convert to fraction form
    487,625.67/672,886.74 = 272,724.22/x
  3. Step 3: Cross multiply
    487,625.67x = 672,886.74 × 272,724.22
  4. Step 4: Simplify right side
    487,625.67x = 183,512,509,393.68
  5. Step 5: Solve for x
    x = 183,512,509,393.68/487,625.67
  6. Step 6: Final answer
    x = 376,338.90

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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.