Home / 355,341.15-490,370.84-202,393.59

Finding the Fourth Proportional to 355,341.15, 490,370.84 and 202,393.59

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Solution

The fourth proportional to 355,341.15, 490,370.84 and 202,393.59 is: 279,303.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,341.15 : 490,370.84 = 202,393.59 : x
  2. Step 2: Convert to fraction form
    355,341.15/490,370.84 = 202,393.59/x
  3. Step 3: Cross multiply
    355,341.15x = 490,370.84 × 202,393.59
  4. Step 4: Simplify right side
    355,341.15x = 99,247,914,738.92
  5. Step 5: Solve for x
    x = 99,247,914,738.92/355,341.15
  6. Step 6: Final answer
    x = 279,303.18

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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.