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Finding the Fourth Proportional to 339,859.47, 509,756.20 and 103,204.20

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Solution

The fourth proportional to 339,859.47, 509,756.20 and 103,204.20 is: 154,796.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,859.47 : 509,756.20 = 103,204.20 : x
  2. Step 2: Convert to fraction form
    339,859.47/509,756.20 = 103,204.20/x
  3. Step 3: Cross multiply
    339,859.47x = 509,756.20 × 103,204.20
  4. Step 4: Simplify right side
    339,859.47x = 52,608,980,816.04
  5. Step 5: Solve for x
    x = 52,608,980,816.04/339,859.47
  6. Step 6: Final answer
    x = 154,796.28

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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.