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Finding the Fourth Proportional to 223,421.89, 308,325.09 and 121,448.83

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Solution

The fourth proportional to 223,421.89, 308,325.09 and 121,448.83 is: 167,600.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,421.89 : 308,325.09 = 121,448.83 : x
  2. Step 2: Convert to fraction form
    223,421.89/308,325.09 = 121,448.83/x
  3. Step 3: Cross multiply
    223,421.89x = 308,325.09 × 121,448.83
  4. Step 4: Simplify right side
    223,421.89x = 37,445,721,440.14
  5. Step 5: Solve for x
    x = 37,445,721,440.14/223,421.89
  6. Step 6: Final answer
    x = 167,600.95

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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.