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Finding the Fourth Proportional to 139,476.82, 209,213.40 and 34,296.70

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Solution

The fourth proportional to 139,476.82, 209,213.40 and 34,296.70 is: 51,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,476.82 : 209,213.40 = 34,296.70 : x
  2. Step 2: Convert to fraction form
    139,476.82/209,213.40 = 34,296.70/x
  3. Step 3: Cross multiply
    139,476.82x = 209,213.40 × 34,296.70
  4. Step 4: Simplify right side
    139,476.82x = 7,175,329,215.78
  5. Step 5: Solve for x
    x = 7,175,329,215.78/139,476.82
  6. Step 6: Final answer
    x = 51,444.60

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1.5x scale

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.