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Finding the Fourth Proportional to 252,980.58, 349,120.42 and 138,265.60

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Solution

The fourth proportional to 252,980.58, 349,120.42 and 138,265.60 is: 190,810.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,980.58 : 349,120.42 = 138,265.60 : x
  2. Step 2: Convert to fraction form
    252,980.58/349,120.42 = 138,265.60/x
  3. Step 3: Cross multiply
    252,980.58x = 349,120.42 × 138,265.60
  4. Step 4: Simplify right side
    252,980.58x = 48,271,344,343.55
  5. Step 5: Solve for x
    x = 48,271,344,343.55/252,980.58
  6. Step 6: Final answer
    x = 190,810.47

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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.