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Finding the Fourth Proportional to 260,118, 358,962.84 and 140,886

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Solution

The fourth proportional to 260,118, 358,962.84 and 140,886 is: 194,422.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,118 : 358,962.84 = 140,886 : x
  2. Step 2: Convert to fraction form
    260,118/358,962.84 = 140,886/x
  3. Step 3: Cross multiply
    260,118x = 358,962.84 × 140,886
  4. Step 4: Simplify right side
    260,118x = 50,572,838,676.24
  5. Step 5: Solve for x
    x = 50,572,838,676.24/260,118
  6. Step 6: Final answer
    x = 194,422.68

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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.