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Finding the Fourth Proportional to 260,326.66, 390,044.22 and 142,080.97

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Solution

The fourth proportional to 260,326.66, 390,044.22 and 142,080.97 is: 212,878.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,326.66 : 390,044.22 = 142,080.97 : x
  2. Step 2: Convert to fraction form
    260,326.66/390,044.22 = 142,080.97/x
  3. Step 3: Cross multiply
    260,326.66x = 390,044.22 × 142,080.97
  4. Step 4: Simplify right side
    260,326.66x = 55,417,861,120.49
  5. Step 5: Solve for x
    x = 55,417,861,120.49/260,326.66
  6. Step 6: Final answer
    x = 212,878.16

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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.