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Finding the Fourth Proportional to 255,983.49, 384,035.58 and 87,505.52

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Solution

The fourth proportional to 255,983.49, 384,035.58 and 87,505.52 is: 131,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,983.49 : 384,035.58 = 87,505.52 : x
  2. Step 2: Convert to fraction form
    255,983.49/384,035.58 = 87,505.52/x
  3. Step 3: Cross multiply
    255,983.49x = 384,035.58 × 87,505.52
  4. Step 4: Simplify right side
    255,983.49x = 33,605,231,206.22
  5. Step 5: Solve for x
    x = 33,605,231,206.22/255,983.49
  6. Step 6: Final answer
    x = 131,278.90

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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.