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Finding the Fourth Proportional to 298,938.39, 448,429.45 and 121,448.76

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Solution

The fourth proportional to 298,938.39, 448,429.45 and 121,448.76 is: 182,182.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,938.39 : 448,429.45 = 121,448.76 : x
  2. Step 2: Convert to fraction form
    298,938.39/448,429.45 = 121,448.76/x
  3. Step 3: Cross multiply
    298,938.39x = 448,429.45 × 121,448.76
  4. Step 4: Simplify right side
    298,938.39x = 54,461,198,407.83
  5. Step 5: Solve for x
    x = 54,461,198,407.83/298,938.39
  6. Step 6: Final answer
    x = 182,182.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.