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Finding the Fourth Proportional to 289,300.80, 433,951.20 and 164,884.80

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Solution

The fourth proportional to 289,300.80, 433,951.20 and 164,884.80 is: 247,327.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,300.80 : 433,951.20 = 164,884.80 : x
  2. Step 2: Convert to fraction form
    289,300.80/433,951.20 = 164,884.80/x
  3. Step 3: Cross multiply
    289,300.80x = 433,951.20 × 164,884.80
  4. Step 4: Simplify right side
    289,300.80x = 71,551,956,821.76
  5. Step 5: Solve for x
    x = 71,551,956,821.76/289,300.80
  6. Step 6: Final answer
    x = 247,327.20

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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.