Home / 871,238.70-1,306,922.85-310,200.30

Finding the Fourth Proportional to 871,238.70, 1,306,922.85 and 310,200.30

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Solution

The fourth proportional to 871,238.70, 1,306,922.85 and 310,200.30 is: 465,323.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,238.70 : 1,306,922.85 = 310,200.30 : x
  2. Step 2: Convert to fraction form
    871,238.70/1,306,922.85 = 310,200.30/x
  3. Step 3: Cross multiply
    871,238.70x = 1,306,922.85 × 310,200.30
  4. Step 4: Simplify right side
    871,238.70x = 405,407,860,146.86
  5. Step 5: Solve for x
    x = 405,407,860,146.86/871,238.70
  6. Step 6: Final answer
    x = 465,323.52

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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.