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Finding the Fourth Proportional to 339,934.20, 509,974.20 and 103,300.80

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Solution

The fourth proportional to 339,934.20, 509,974.20 and 103,300.80 is: 154,973.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,934.20 : 509,974.20 = 103,300.80 : x
  2. Step 2: Convert to fraction form
    339,934.20/509,974.20 = 103,300.80/x
  3. Step 3: Cross multiply
    339,934.20x = 509,974.20 × 103,300.80
  4. Step 4: Simplify right side
    339,934.20x = 52,680,742,839.36
  5. Step 5: Solve for x
    x = 52,680,742,839.36/339,934.20
  6. Step 6: Final answer
    x = 154,973.35

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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.