Home / 211,388.20-291,715.23-115,903.78

Finding the Fourth Proportional to 211,388.20, 291,715.23 and 115,903.78

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Solution

The fourth proportional to 211,388.20, 291,715.23 and 115,903.78 is: 159,946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,388.20 : 291,715.23 = 115,903.78 : x
  2. Step 2: Convert to fraction form
    211,388.20/291,715.23 = 115,903.78/x
  3. Step 3: Cross multiply
    211,388.20x = 291,715.23 × 115,903.78
  4. Step 4: Simplify right side
    211,388.20x = 33,810,897,840.57
  5. Step 5: Solve for x
    x = 33,810,897,840.57/211,388.20
  6. Step 6: Final answer
    x = 159,946.95

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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.