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Finding the Fourth Proportional to 221,280.20, 331,920.30 and 150,421.40

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Solution

The fourth proportional to 221,280.20, 331,920.30 and 150,421.40 is: 225,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,280.20 : 331,920.30 = 150,421.40 : x
  2. Step 2: Convert to fraction form
    221,280.20/331,920.30 = 150,421.40/x
  3. Step 3: Cross multiply
    221,280.20x = 331,920.30 × 150,421.40
  4. Step 4: Simplify right side
    221,280.20x = 49,927,916,214.42
  5. Step 5: Solve for x
    x = 49,927,916,214.42/221,280.20
  6. Step 6: Final answer
    x = 225,632.10

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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.