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Finding the Fourth Proportional to 288,942.80, 433,241.40 and 148,974.80

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Solution

The fourth proportional to 288,942.80, 433,241.40 and 148,974.80 is: 223,373.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,942.80 : 433,241.40 = 148,974.80 : x
  2. Step 2: Convert to fraction form
    288,942.80/433,241.40 = 148,974.80/x
  3. Step 3: Cross multiply
    288,942.80x = 433,241.40 × 148,974.80
  4. Step 4: Simplify right side
    288,942.80x = 64,542,050,916.72
  5. Step 5: Solve for x
    x = 64,542,050,916.72/288,942.80
  6. Step 6: Final answer
    x = 223,373.11

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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.