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Finding the Fourth Proportional to 391,027.57, 586,763.04 and 211,110.60

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Solution

The fourth proportional to 391,027.57, 586,763.04 and 211,110.60 is: 316,785.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,027.57 : 586,763.04 = 211,110.60 : x
  2. Step 2: Convert to fraction form
    391,027.57/586,763.04 = 211,110.60/x
  3. Step 3: Cross multiply
    391,027.57x = 586,763.04 × 211,110.60
  4. Step 4: Simplify right side
    391,027.57x = 123,871,896,859.57
  5. Step 5: Solve for x
    x = 123,871,896,859.57/391,027.57
  6. Step 6: Final answer
    x = 316,785.58

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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.