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Finding the Fourth Proportional to 393,453.36, 543,007.69 and 240,581.15

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Solution

The fourth proportional to 393,453.36, 543,007.69 and 240,581.15 is: 332,027.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,453.36 : 543,007.69 = 240,581.15 : x
  2. Step 2: Convert to fraction form
    393,453.36/543,007.69 = 240,581.15/x
  3. Step 3: Cross multiply
    393,453.36x = 543,007.69 × 240,581.15
  4. Step 4: Simplify right side
    393,453.36x = 130,637,413,238.83
  5. Step 5: Solve for x
    x = 130,637,413,238.83/393,453.36
  6. Step 6: Final answer
    x = 332,027.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.