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Finding the Fourth Proportional to 259,987.22, 389,980.95 and 93,775.22

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Solution

The fourth proportional to 259,987.22, 389,980.95 and 93,775.22 is: 140,662.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,987.22 : 389,980.95 = 93,775.22 : x
  2. Step 2: Convert to fraction form
    259,987.22/389,980.95 = 93,775.22/x
  3. Step 3: Cross multiply
    259,987.22x = 389,980.95 × 93,775.22
  4. Step 4: Simplify right side
    259,987.22x = 36,570,549,382.06
  5. Step 5: Solve for x
    x = 36,570,549,382.06/259,987.22
  6. Step 6: Final answer
    x = 140,662.87

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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.