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Finding the Fourth Proportional to 338,721.01, 508,032.05 and 98,770.43

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Solution

The fourth proportional to 338,721.01, 508,032.05 and 98,770.43 is: 148,141.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,721.01 : 508,032.05 = 98,770.43 : x
  2. Step 2: Convert to fraction form
    338,721.01/508,032.05 = 98,770.43/x
  3. Step 3: Cross multiply
    338,721.01x = 508,032.05 × 98,770.43
  4. Step 4: Simplify right side
    338,721.01x = 50,178,544,032.28
  5. Step 5: Solve for x
    x = 50,178,544,032.28/338,721.01
  6. Step 6: Final answer
    x = 148,141.22

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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.