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Finding the Fourth Proportional to 326,530.60, 489,191.10 and 185,871.40

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Solution

The fourth proportional to 326,530.60, 489,191.10 and 185,871.40 is: 278,462.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,530.60 : 489,191.10 = 185,871.40 : x
  2. Step 2: Convert to fraction form
    326,530.60/489,191.10 = 185,871.40/x
  3. Step 3: Cross multiply
    326,530.60x = 489,191.10 × 185,871.40
  4. Step 4: Simplify right side
    326,530.60x = 90,926,634,624.54
  5. Step 5: Solve for x
    x = 90,926,634,624.54/326,530.60
  6. Step 6: Final answer
    x = 278,462.83

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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.