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Finding the Fourth Proportional to 487,440.44, 672,655.21 and 269,643.44

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Solution

The fourth proportional to 487,440.44, 672,655.21 and 269,643.44 is: 372,100.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,440.44 : 672,655.21 = 269,643.44 : x
  2. Step 2: Convert to fraction form
    487,440.44/672,655.21 = 269,643.44/x
  3. Step 3: Cross multiply
    487,440.44x = 672,655.21 × 269,643.44
  4. Step 4: Simplify right side
    487,440.44x = 181,377,064,758.32
  5. Step 5: Solve for x
    x = 181,377,064,758.32/487,440.44
  6. Step 6: Final answer
    x = 372,100.98

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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.