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Finding the Fourth Proportional to 348,570.90, 522,856.35 and 215,601.30

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Solution

The fourth proportional to 348,570.90, 522,856.35 and 215,601.30 is: 323,401.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,570.90 : 522,856.35 = 215,601.30 : x
  2. Step 2: Convert to fraction form
    348,570.90/522,856.35 = 215,601.30/x
  3. Step 3: Cross multiply
    348,570.90x = 522,856.35 × 215,601.30
  4. Step 4: Simplify right side
    348,570.90x = 112,728,508,773.26
  5. Step 5: Solve for x
    x = 112,728,508,773.26/348,570.90
  6. Step 6: Final answer
    x = 323,401.95

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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.