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Finding the Fourth Proportional to 343,741.80, 515,175.30 and 165,865.80

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Solution

The fourth proportional to 343,741.80, 515,175.30 and 165,865.80 is: 248,587.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,741.80 : 515,175.30 = 165,865.80 : x
  2. Step 2: Convert to fraction form
    343,741.80/515,175.30 = 165,865.80/x
  3. Step 3: Cross multiply
    343,741.80x = 515,175.30 × 165,865.80
  4. Step 4: Simplify right side
    343,741.80x = 85,449,963,274.74
  5. Step 5: Solve for x
    x = 85,449,963,274.74/343,741.80
  6. Step 6: Final answer
    x = 248,587.64

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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.