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Finding the Fourth Proportional to 221,332.80, 331,480.80 and 150,830.40

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Solution

The fourth proportional to 221,332.80, 331,480.80 and 150,830.40 is: 225,892.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,332.80 : 331,480.80 = 150,830.40 : x
  2. Step 2: Convert to fraction form
    221,332.80/331,480.80 = 150,830.40/x
  3. Step 3: Cross multiply
    221,332.80x = 331,480.80 × 150,830.40
  4. Step 4: Simplify right side
    221,332.80x = 49,997,381,656.32
  5. Step 5: Solve for x
    x = 49,997,381,656.32/221,332.80
  6. Step 6: Final answer
    x = 225,892.33

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1.5x scale

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.