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Finding the Fourth Proportional to 210,586.32, 315,763.79 and 103,735.17

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Solution

The fourth proportional to 210,586.32, 315,763.79 and 103,735.17 is: 155,545.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,586.32 : 315,763.79 = 103,735.17 : x
  2. Step 2: Convert to fraction form
    210,586.32/315,763.79 = 103,735.17/x
  3. Step 3: Cross multiply
    210,586.32x = 315,763.79 × 103,735.17
  4. Step 4: Simplify right side
    210,586.32x = 32,755,808,856.68
  5. Step 5: Solve for x
    x = 32,755,808,856.68/210,586.32
  6. Step 6: Final answer
    x = 155,545.76

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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.