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Finding the Fourth Proportional to 326,491.52, 489,063.36 and 302,869.76

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Solution

The fourth proportional to 326,491.52, 489,063.36 and 302,869.76 is: 453,679.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,491.52 : 489,063.36 = 302,869.76 : x
  2. Step 2: Convert to fraction form
    326,491.52/489,063.36 = 302,869.76/x
  3. Step 3: Cross multiply
    326,491.52x = 489,063.36 × 302,869.76
  4. Step 4: Simplify right side
    326,491.52x = 148,122,502,467.99
  5. Step 5: Solve for x
    x = 148,122,502,467.99/326,491.52
  6. Step 6: Final answer
    x = 453,679.48

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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.