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Finding the Fourth Proportional to 279,422.96, 385,603.72 and 152,099.42

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Solution

The fourth proportional to 279,422.96, 385,603.72 and 152,099.42 is: 209,897.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,422.96 : 385,603.72 = 152,099.42 : x
  2. Step 2: Convert to fraction form
    279,422.96/385,603.72 = 152,099.42/x
  3. Step 3: Cross multiply
    279,422.96x = 385,603.72 × 152,099.42
  4. Step 4: Simplify right side
    279,422.96x = 58,650,102,161.84
  5. Step 5: Solve for x
    x = 58,650,102,161.84/279,422.96
  6. Step 6: Final answer
    x = 209,897.22

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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.