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Finding the Fourth Proportional to 348,998.88, 523,492.56 and 86,342.88

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Solution

The fourth proportional to 348,998.88, 523,492.56 and 86,342.88 is: 129,512.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,998.88 : 523,492.56 = 86,342.88 : x
  2. Step 2: Convert to fraction form
    348,998.88/523,492.56 = 86,342.88/x
  3. Step 3: Cross multiply
    348,998.88x = 523,492.56 × 86,342.88
  4. Step 4: Simplify right side
    348,998.88x = 45,199,855,288.97
  5. Step 5: Solve for x
    x = 45,199,855,288.97/348,998.88
  6. Step 6: Final answer
    x = 129,512.89

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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.