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Finding the Fourth Proportional to 211,491.67, 291,928.30 and 189,071.51

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Solution

The fourth proportional to 211,491.67, 291,928.30 and 189,071.51 is: 260,981.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,491.67 : 291,928.30 = 189,071.51 : x
  2. Step 2: Convert to fraction form
    211,491.67/291,928.30 = 189,071.51/x
  3. Step 3: Cross multiply
    211,491.67x = 291,928.30 × 189,071.51
  4. Step 4: Simplify right side
    211,491.67x = 55,195,324,492.73
  5. Step 5: Solve for x
    x = 55,195,324,492.73/211,491.67
  6. Step 6: Final answer
    x = 260,981.08

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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.