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Finding the Fourth Proportional to 326,730.15, 490,119.84 and 90,070.83

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Solution

The fourth proportional to 326,730.15, 490,119.84 and 90,070.83 is: 135,113.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,730.15 : 490,119.84 = 90,070.83 : x
  2. Step 2: Convert to fraction form
    326,730.15/490,119.84 = 90,070.83/x
  3. Step 3: Cross multiply
    326,730.15x = 490,119.84 × 90,070.83
  4. Step 4: Simplify right side
    326,730.15x = 44,145,500,788.27
  5. Step 5: Solve for x
    x = 44,145,500,788.27/326,730.15
  6. Step 6: Final answer
    x = 135,113.03

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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.