Home / 330,197.20-455,501.64-209,134.80

Finding the Fourth Proportional to 330,197.20, 455,501.64 and 209,134.80

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Solution

The fourth proportional to 330,197.20, 455,501.64 and 209,134.80 is: 288,498.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,197.20 : 455,501.64 = 209,134.80 : x
  2. Step 2: Convert to fraction form
    330,197.20/455,501.64 = 209,134.80/x
  3. Step 3: Cross multiply
    330,197.20x = 455,501.64 × 209,134.80
  4. Step 4: Simplify right side
    330,197.20x = 95,261,244,381.07
  5. Step 5: Solve for x
    x = 95,261,244,381.07/330,197.20
  6. Step 6: Final answer
    x = 288,498.04

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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.