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Finding the Fourth Proportional to 503,107.20, 755,535.60 and 266,911.20

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Solution

The fourth proportional to 503,107.20, 755,535.60 and 266,911.20 is: 400,830.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,107.20 : 755,535.60 = 266,911.20 : x
  2. Step 2: Convert to fraction form
    503,107.20/755,535.60 = 266,911.20/x
  3. Step 3: Cross multiply
    503,107.20x = 755,535.60 × 266,911.20
  4. Step 4: Simplify right side
    503,107.20x = 201,660,913,638.72
  5. Step 5: Solve for x
    x = 201,660,913,638.72/503,107.20
  6. Step 6: Final answer
    x = 400,830.90

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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.