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Finding the Fourth Proportional to 221,838.60, 332,790.30 and 72,053.40

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Solution

The fourth proportional to 221,838.60, 332,790.30 and 72,053.40 is: 108,090.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,838.60 : 332,790.30 = 72,053.40 : x
  2. Step 2: Convert to fraction form
    221,838.60/332,790.30 = 72,053.40/x
  3. Step 3: Cross multiply
    221,838.60x = 332,790.30 × 72,053.40
  4. Step 4: Simplify right side
    221,838.60x = 23,978,672,602.02
  5. Step 5: Solve for x
    x = 23,978,672,602.02/221,838.60
  6. Step 6: Final answer
    x = 108,090.62

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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.