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Finding the Fourth Proportional to 223,873.55, 308,953.05 and 121,902.95

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Solution

The fourth proportional to 223,873.55, 308,953.05 and 121,902.95 is: 168,230.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,873.55 : 308,953.05 = 121,902.95 : x
  2. Step 2: Convert to fraction form
    223,873.55/308,953.05 = 121,902.95/x
  3. Step 3: Cross multiply
    223,873.55x = 308,953.05 × 121,902.95
  4. Step 4: Simplify right side
    223,873.55x = 37,662,288,206.50
  5. Step 5: Solve for x
    x = 37,662,288,206.50/223,873.55
  6. Step 6: Final answer
    x = 168,230.18

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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.