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Finding the Fourth Proportional to 326,589.52, 489,835.32 and 155,768.08

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Solution

The fourth proportional to 326,589.52, 489,835.32 and 155,768.08 is: 233,628.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,589.52 : 489,835.32 = 155,768.08 : x
  2. Step 2: Convert to fraction form
    326,589.52/489,835.32 = 155,768.08/x
  3. Step 3: Cross multiply
    326,589.52x = 489,835.32 × 155,768.08
  4. Step 4: Simplify right side
    326,589.52x = 76,300,707,312.59
  5. Step 5: Solve for x
    x = 76,300,707,312.59/326,589.52
  6. Step 6: Final answer
    x = 233,628.77

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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.