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Finding the Fourth Proportional to 222,645.76, 307,248.80 and 122,043.20

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Solution

The fourth proportional to 222,645.76, 307,248.80 and 122,043.20 is: 168,418.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,645.76 : 307,248.80 = 122,043.20 : x
  2. Step 2: Convert to fraction form
    222,645.76/307,248.80 = 122,043.20/x
  3. Step 3: Cross multiply
    222,645.76x = 307,248.80 × 122,043.20
  4. Step 4: Simplify right side
    222,645.76x = 37,497,626,748.16
  5. Step 5: Solve for x
    x = 37,497,626,748.16/222,645.76
  6. Step 6: Final answer
    x = 168,418.33

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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.