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Finding the Fourth Proportional to 222,741.70, 307,377.93 and 122,139.70

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Solution

The fourth proportional to 222,741.70, 307,377.93 and 122,139.70 is: 168,549.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,741.70 : 307,377.93 = 122,139.70 : x
  2. Step 2: Convert to fraction form
    222,741.70/307,377.93 = 122,139.70/x
  3. Step 3: Cross multiply
    222,741.70x = 307,377.93 × 122,139.70
  4. Step 4: Simplify right side
    222,741.70x = 37,543,048,156.82
  5. Step 5: Solve for x
    x = 37,543,048,156.82/222,741.70
  6. Step 6: Final answer
    x = 168,549.71

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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.