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Finding the Fourth Proportional to 299,726.78, 449,811.98 and 141,955.61

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Solution

The fourth proportional to 299,726.78, 449,811.98 and 141,955.61 is: 213,038.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,726.78 : 449,811.98 = 141,955.61 : x
  2. Step 2: Convert to fraction form
    299,726.78/449,811.98 = 141,955.61/x
  3. Step 3: Cross multiply
    299,726.78x = 449,811.98 × 141,955.61
  4. Step 4: Simplify right side
    299,726.78x = 63,853,334,006.21
  5. Step 5: Solve for x
    x = 63,853,334,006.21/299,726.78
  6. Step 6: Final answer
    x = 213,038.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.