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Finding the Fourth Proportional to 221,344.40, 332,362.20 and 128,032.40

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Solution

The fourth proportional to 221,344.40, 332,362.20 and 128,032.40 is: 192,248.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,344.40 : 332,362.20 = 128,032.40 : x
  2. Step 2: Convert to fraction form
    221,344.40/332,362.20 = 128,032.40/x
  3. Step 3: Cross multiply
    221,344.40x = 332,362.20 × 128,032.40
  4. Step 4: Simplify right side
    221,344.40x = 42,553,130,135.28
  5. Step 5: Solve for x
    x = 42,553,130,135.28/221,344.40
  6. Step 6: Final answer
    x = 192,248.51

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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.