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Finding the Fourth Proportional to 487,440.82, 672,655.74 and 269,643.82

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Solution

The fourth proportional to 487,440.82, 672,655.74 and 269,643.82 is: 372,101.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,440.82 : 672,655.74 = 269,643.82 : x
  2. Step 2: Convert to fraction form
    487,440.82/672,655.74 = 269,643.82/x
  3. Step 3: Cross multiply
    487,440.82x = 672,655.74 × 269,643.82
  4. Step 4: Simplify right side
    487,440.82x = 181,377,463,278.53
  5. Step 5: Solve for x
    x = 181,377,463,278.53/487,440.82
  6. Step 6: Final answer
    x = 372,101.51

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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.