Home / 355,340.15-490,369.46-202,392.57

Finding the Fourth Proportional to 355,340.15, 490,369.46 and 202,392.57

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Solution

The fourth proportional to 355,340.15, 490,369.46 and 202,392.57 is: 279,301.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,340.15 : 490,369.46 = 202,392.57 : x
  2. Step 2: Convert to fraction form
    355,340.15/490,369.46 = 202,392.57/x
  3. Step 3: Cross multiply
    355,340.15x = 490,369.46 × 202,392.57
  4. Step 4: Simplify right side
    355,340.15x = 99,247,136,085.83
  5. Step 5: Solve for x
    x = 99,247,136,085.83/355,340.15
  6. Step 6: Final answer
    x = 279,301.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.