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Finding the Fourth Proportional to 221,063.60, 331,595.40 and 73,319.60

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Solution

The fourth proportional to 221,063.60, 331,595.40 and 73,319.60 is: 109,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,063.60 : 331,595.40 = 73,319.60 : x
  2. Step 2: Convert to fraction form
    221,063.60/331,595.40 = 73,319.60/x
  3. Step 3: Cross multiply
    221,063.60x = 331,595.40 × 73,319.60
  4. Step 4: Simplify right side
    221,063.60x = 24,312,442,089.84
  5. Step 5: Solve for x
    x = 24,312,442,089.84/221,063.60
  6. Step 6: Final answer
    x = 109,979.40

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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.