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Finding the Fourth Proportional to 439,639.40, 659,264.70 and 202,860.20

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Solution

The fourth proportional to 439,639.40, 659,264.70 and 202,860.20 is: 304,200.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,639.40 : 659,264.70 = 202,860.20 : x
  2. Step 2: Convert to fraction form
    439,639.40/659,264.70 = 202,860.20/x
  3. Step 3: Cross multiply
    439,639.40x = 659,264.70 × 202,860.20
  4. Step 4: Simplify right side
    439,639.40x = 133,738,568,894.94
  5. Step 5: Solve for x
    x = 133,738,568,894.94/439,639.40
  6. Step 6: Final answer
    x = 304,200.60

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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.