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Finding the Fourth Proportional to 348,515.30, 521,606.55 and 306,524.90

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Solution

The fourth proportional to 348,515.30, 521,606.55 and 306,524.90 is: 458,761.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,515.30 : 521,606.55 = 306,524.90 : x
  2. Step 2: Convert to fraction form
    348,515.30/521,606.55 = 306,524.90/x
  3. Step 3: Cross multiply
    348,515.30x = 521,606.55 × 306,524.90
  4. Step 4: Simplify right side
    348,515.30x = 159,885,395,578.10
  5. Step 5: Solve for x
    x = 159,885,395,578.10/348,515.30
  6. Step 6: Final answer
    x = 458,761.48

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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.