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Finding the Fourth Proportional to 381,017.68, 571,453.66 and 191,425.52

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Solution

The fourth proportional to 381,017.68, 571,453.66 and 191,425.52 is: 287,101.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,017.68 : 571,453.66 = 191,425.52 : x
  2. Step 2: Convert to fraction form
    381,017.68/571,453.66 = 191,425.52/x
  3. Step 3: Cross multiply
    381,017.68x = 571,453.66 × 191,425.52
  4. Step 4: Simplify right side
    381,017.68x = 109,390,812,474.89
  5. Step 5: Solve for x
    x = 109,390,812,474.89/381,017.68
  6. Step 6: Final answer
    x = 287,101.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.