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Finding the Fourth Proportional to 223,243.25, 308,070.51 and 121,266.42

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Solution

The fourth proportional to 223,243.25, 308,070.51 and 121,266.42 is: 167,344.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,243.25 : 308,070.51 = 121,266.42 : x
  2. Step 2: Convert to fraction form
    223,243.25/308,070.51 = 121,266.42/x
  3. Step 3: Cross multiply
    223,243.25x = 308,070.51 × 121,266.42
  4. Step 4: Simplify right side
    223,243.25x = 37,358,607,855.27
  5. Step 5: Solve for x
    x = 37,358,607,855.27/223,243.25
  6. Step 6: Final answer
    x = 167,344.85

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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.