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Finding the Fourth Proportional to 286,273.80, 428,535.90 and 286,273.80

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Solution

The fourth proportional to 286,273.80, 428,535.90 and 286,273.80 is: 428,535.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,273.80 : 428,535.90 = 286,273.80 : x
  2. Step 2: Convert to fraction form
    286,273.80/428,535.90 = 286,273.80/x
  3. Step 3: Cross multiply
    286,273.80x = 428,535.90 × 286,273.80
  4. Step 4: Simplify right side
    286,273.80x = 122,678,600,529.42
  5. Step 5: Solve for x
    x = 122,678,600,529.42/286,273.80
  6. Step 6: Final answer
    x = 428,535.90

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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.