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Finding the Fourth Proportional to 298,326.90, 447,445.92 and 98,648.33

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Solution

The fourth proportional to 298,326.90, 447,445.92 and 98,648.33 is: 147,957.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,326.90 : 447,445.92 = 98,648.33 : x
  2. Step 2: Convert to fraction form
    298,326.90/447,445.92 = 98,648.33/x
  3. Step 3: Cross multiply
    298,326.90x = 447,445.92 × 98,648.33
  4. Step 4: Simplify right side
    298,326.90x = 44,139,793,422.90
  5. Step 5: Solve for x
    x = 44,139,793,422.90/298,326.90
  6. Step 6: Final answer
    x = 147,957.81

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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.