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Finding the Fourth Proportional to 260,798.01, 391,197 and 142,404.75

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Solution

The fourth proportional to 260,798.01, 391,197 and 142,404.75 is: 213,607.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,798.01 : 391,197 = 142,404.75 : x
  2. Step 2: Convert to fraction form
    260,798.01/391,197 = 142,404.75/x
  3. Step 3: Cross multiply
    260,798.01x = 391,197 × 142,404.75
  4. Step 4: Simplify right side
    260,798.01x = 55,708,310,985.75
  5. Step 5: Solve for x
    x = 55,708,310,985.75/260,798.01
  6. Step 6: Final answer
    x = 213,607.12

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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.