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Finding the Fourth Proportional to 240,339.80, 360,509.70 and 209,235.80

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Solution

The fourth proportional to 240,339.80, 360,509.70 and 209,235.80 is: 313,853.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,339.80 : 360,509.70 = 209,235.80 : x
  2. Step 2: Convert to fraction form
    240,339.80/360,509.70 = 209,235.80/x
  3. Step 3: Cross multiply
    240,339.80x = 360,509.70 × 209,235.80
  4. Step 4: Simplify right side
    240,339.80x = 75,431,535,487.26
  5. Step 5: Solve for x
    x = 75,431,535,487.26/240,339.80
  6. Step 6: Final answer
    x = 313,853.70

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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.