Home / 211,113.64-291,330.30-115,617.88

Finding the Fourth Proportional to 211,113.64, 291,330.30 and 115,617.88

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Solution

The fourth proportional to 211,113.64, 291,330.30 and 115,617.88 is: 159,549.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,113.64 : 291,330.30 = 115,617.88 : x
  2. Step 2: Convert to fraction form
    211,113.64/291,330.30 = 115,617.88/x
  3. Step 3: Cross multiply
    211,113.64x = 291,330.30 × 115,617.88
  4. Step 4: Simplify right side
    211,113.64x = 33,682,991,665.76
  5. Step 5: Solve for x
    x = 33,682,991,665.76/211,113.64
  6. Step 6: Final answer
    x = 159,549.10

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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.