Home / 211,368.18-291,680.34-115,872.78

Finding the Fourth Proportional to 211,368.18, 291,680.34 and 115,872.78

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Solution

The fourth proportional to 211,368.18, 291,680.34 and 115,872.78 is: 159,900.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,368.18 : 291,680.34 = 115,872.78 : x
  2. Step 2: Convert to fraction form
    211,368.18/291,680.34 = 115,872.78/x
  3. Step 3: Cross multiply
    211,368.18x = 291,680.34 × 115,872.78
  4. Step 4: Simplify right side
    211,368.18x = 33,797,811,867.15
  5. Step 5: Solve for x
    x = 33,797,811,867.15/211,368.18
  6. Step 6: Final answer
    x = 159,900.19

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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.