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Finding the Fourth Proportional to 228,509.77, 315,346.74 and 131,660.20

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Solution

The fourth proportional to 228,509.77, 315,346.74 and 131,660.20 is: 181,692.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,509.77 : 315,346.74 = 131,660.20 : x
  2. Step 2: Convert to fraction form
    228,509.77/315,346.74 = 131,660.20/x
  3. Step 3: Cross multiply
    228,509.77x = 315,346.74 × 131,660.20
  4. Step 4: Simplify right side
    228,509.77x = 41,518,614,857.75
  5. Step 5: Solve for x
    x = 41,518,614,857.75/228,509.77
  6. Step 6: Final answer
    x = 181,692.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.