Home / 252,815.04-379,429.92-128,191.68

Finding the Fourth Proportional to 252,815.04, 379,429.92 and 128,191.68

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Solution

The fourth proportional to 252,815.04, 379,429.92 and 128,191.68 is: 192,392.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,815.04 : 379,429.92 = 128,191.68 : x
  2. Step 2: Convert to fraction form
    252,815.04/379,429.92 = 128,191.68/x
  3. Step 3: Cross multiply
    252,815.04x = 379,429.92 × 128,191.68
  4. Step 4: Simplify right side
    252,815.04x = 48,639,758,887.07
  5. Step 5: Solve for x
    x = 48,639,758,887.07/252,815.04
  6. Step 6: Final answer
    x = 192,392.66

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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.