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Finding the Fourth Proportional to 487,662.77, 672,947.55 and 272,761.32

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Solution

The fourth proportional to 487,662.77, 672,947.55 and 272,761.32 is: 376,395.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,662.77 : 672,947.55 = 272,761.32 : x
  2. Step 2: Convert to fraction form
    487,662.77/672,947.55 = 272,761.32/x
  3. Step 3: Cross multiply
    487,662.77x = 672,947.55 × 272,761.32
  4. Step 4: Simplify right side
    487,662.77x = 183,554,062,028.77
  5. Step 5: Solve for x
    x = 183,554,062,028.77/487,662.77
  6. Step 6: Final answer
    x = 376,395.48

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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.