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Finding the Fourth Proportional to 347,998.78, 522,001.25 and 137,636.74

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Solution

The fourth proportional to 347,998.78, 522,001.25 and 137,636.74 is: 206,456.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,998.78 : 522,001.25 = 137,636.74 : x
  2. Step 2: Convert to fraction form
    347,998.78/522,001.25 = 137,636.74/x
  3. Step 3: Cross multiply
    347,998.78x = 522,001.25 × 137,636.74
  4. Step 4: Simplify right side
    347,998.78x = 71,846,547,027.74
  5. Step 5: Solve for x
    x = 71,846,547,027.74/347,998.78
  6. Step 6: Final answer
    x = 206,456.32

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1.5x scale

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.