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Finding the Fourth Proportional to 299,402.35, 448,968.15 and 86,121.25

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Solution

The fourth proportional to 299,402.35, 448,968.15 and 86,121.25 is: 129,142.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,402.35 : 448,968.15 = 86,121.25 : x
  2. Step 2: Convert to fraction form
    299,402.35/448,968.15 = 86,121.25/x
  3. Step 3: Cross multiply
    299,402.35x = 448,968.15 × 86,121.25
  4. Step 4: Simplify right side
    299,402.35x = 38,665,697,165.77
  5. Step 5: Solve for x
    x = 38,665,697,165.77/299,402.35
  6. Step 6: Final answer
    x = 129,142.93

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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.