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Finding the Fourth Proportional to 326,189.26, 489,317.48 and 112,956.76

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Solution

The fourth proportional to 326,189.26, 489,317.48 and 112,956.76 is: 169,446.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,189.26 : 489,317.48 = 112,956.76 : x
  2. Step 2: Convert to fraction form
    326,189.26/489,317.48 = 112,956.76/x
  3. Step 3: Cross multiply
    326,189.26x = 489,317.48 × 112,956.76
  4. Step 4: Simplify right side
    326,189.26x = 55,271,717,152.16
  5. Step 5: Solve for x
    x = 55,271,717,152.16/326,189.26
  6. Step 6: Final answer
    x = 169,446.77

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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.