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Finding the Fourth Proportional to 222,091, 306,485.58 and 121,491.16

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Solution

The fourth proportional to 222,091, 306,485.58 and 121,491.16 is: 167,657.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,091 : 306,485.58 = 121,491.16 : x
  2. Step 2: Convert to fraction form
    222,091/306,485.58 = 121,491.16/x
  3. Step 3: Cross multiply
    222,091x = 306,485.58 × 121,491.16
  4. Step 4: Simplify right side
    222,091x = 37,235,288,637.47
  5. Step 5: Solve for x
    x = 37,235,288,637.47/222,091
  6. Step 6: Final answer
    x = 167,657.80

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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.