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Finding the Fourth Proportional to 222,990.22, 307,726.70 and 121,015.70

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Solution

The fourth proportional to 222,990.22, 307,726.70 and 121,015.70 is: 167,001.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,990.22 : 307,726.70 = 121,015.70 : x
  2. Step 2: Convert to fraction form
    222,990.22/307,726.70 = 121,015.70/x
  3. Step 3: Cross multiply
    222,990.22x = 307,726.70 × 121,015.70
  4. Step 4: Simplify right side
    222,990.22x = 37,239,762,009.19
  5. Step 5: Solve for x
    x = 37,239,762,009.19/222,990.22
  6. Step 6: Final answer
    x = 167,001.77

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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.