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Finding the Fourth Proportional to 339,964.70, 509,947.05 and 153,340.70

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Solution

The fourth proportional to 339,964.70, 509,947.05 and 153,340.70 is: 230,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,964.70 : 509,947.05 = 153,340.70 : x
  2. Step 2: Convert to fraction form
    339,964.70/509,947.05 = 153,340.70/x
  3. Step 3: Cross multiply
    339,964.70x = 509,947.05 × 153,340.70
  4. Step 4: Simplify right side
    339,964.70x = 78,195,637,609.94
  5. Step 5: Solve for x
    x = 78,195,637,609.94/339,964.70
  6. Step 6: Final answer
    x = 230,011.05

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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.