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Finding the Fourth Proportional to 393,993.06, 543,730.80 and 240,983.28

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Solution

The fourth proportional to 393,993.06, 543,730.80 and 240,983.28 is: 332,569.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,993.06 : 543,730.80 = 240,983.28 : x
  2. Step 2: Convert to fraction form
    393,993.06/543,730.80 = 240,983.28/x
  3. Step 3: Cross multiply
    393,993.06x = 543,730.80 × 240,983.28
  4. Step 4: Simplify right side
    393,993.06x = 131,030,031,621.02
  5. Step 5: Solve for x
    x = 131,030,031,621.02/393,993.06
  6. Step 6: Final answer
    x = 332,569.39

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1.5x scale

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.