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Finding the Fourth Proportional to 255,791.20, 383,686.80 and 202,914.40

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Solution

The fourth proportional to 255,791.20, 383,686.80 and 202,914.40 is: 304,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,791.20 : 383,686.80 = 202,914.40 : x
  2. Step 2: Convert to fraction form
    255,791.20/383,686.80 = 202,914.40/x
  3. Step 3: Cross multiply
    255,791.20x = 383,686.80 × 202,914.40
  4. Step 4: Simplify right side
    255,791.20x = 77,855,576,809.92
  5. Step 5: Solve for x
    x = 77,855,576,809.92/255,791.20
  6. Step 6: Final answer
    x = 304,371.60

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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.