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Finding the Fourth Proportional to 255,369.36, 383,219.28 and 115,119.48

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Solution

The fourth proportional to 255,369.36, 383,219.28 and 115,119.48 is: 172,753.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,369.36 : 383,219.28 = 115,119.48 : x
  2. Step 2: Convert to fraction form
    255,369.36/383,219.28 = 115,119.48/x
  3. Step 3: Cross multiply
    255,369.36x = 383,219.28 × 115,119.48
  4. Step 4: Simplify right side
    255,369.36x = 44,116,004,239.57
  5. Step 5: Solve for x
    x = 44,116,004,239.57/255,369.36
  6. Step 6: Final answer
    x = 172,753.71

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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.