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Finding the Fourth Proportional to 299,860.90, 413,823.45 and 172,555.54

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Solution

The fourth proportional to 299,860.90, 413,823.45 and 172,555.54 is: 238,135.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,860.90 : 413,823.45 = 172,555.54 : x
  2. Step 2: Convert to fraction form
    299,860.90/413,823.45 = 172,555.54/x
  3. Step 3: Cross multiply
    299,860.90x = 413,823.45 × 172,555.54
  4. Step 4: Simplify right side
    299,860.90x = 71,407,528,879.41
  5. Step 5: Solve for x
    x = 71,407,528,879.41/299,860.90
  6. Step 6: Final answer
    x = 238,135.51

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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.