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Finding the Fourth Proportional to 260,632.58, 390,998.43 and 89,808.98

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Solution

The fourth proportional to 260,632.58, 390,998.43 and 89,808.98 is: 134,730.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,632.58 : 390,998.43 = 89,808.98 : x
  2. Step 2: Convert to fraction form
    260,632.58/390,998.43 = 89,808.98/x
  3. Step 3: Cross multiply
    260,632.58x = 390,998.43 × 89,808.98
  4. Step 4: Simplify right side
    260,632.58x = 35,115,170,179.90
  5. Step 5: Solve for x
    x = 35,115,170,179.90/260,632.58
  6. Step 6: Final answer
    x = 134,730.55

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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.