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Finding the Fourth Proportional to 168,416.40, 251,391.50 and 148,487.88

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Solution

The fourth proportional to 168,416.40, 251,391.50 and 148,487.88 is: 221,644.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,416.40 : 251,391.50 = 148,487.88 : x
  2. Step 2: Convert to fraction form
    168,416.40/251,391.50 = 148,487.88/x
  3. Step 3: Cross multiply
    168,416.40x = 251,391.50 × 148,487.88
  4. Step 4: Simplify right side
    168,416.40x = 37,328,590,142.58
  5. Step 5: Solve for x
    x = 37,328,590,142.58/168,416.40
  6. Step 6: Final answer
    x = 221,644.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.