Home / 211,396.72-291,728.64-126,492.88

Finding the Fourth Proportional to 211,396.72, 291,728.64 and 126,492.88

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Solution

The fourth proportional to 211,396.72, 291,728.64 and 126,492.88 is: 174,560.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,396.72 : 291,728.64 = 126,492.88 : x
  2. Step 2: Convert to fraction form
    211,396.72/291,728.64 = 126,492.88/x
  3. Step 3: Cross multiply
    211,396.72x = 291,728.64 × 126,492.88
  4. Step 4: Simplify right side
    211,396.72x = 36,901,595,852.08
  5. Step 5: Solve for x
    x = 36,901,595,852.08/211,396.72
  6. Step 6: Final answer
    x = 174,560.87

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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.