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Finding the Fourth Proportional to 306,291.48, 459,400.74 and 81,668.76

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Solution

The fourth proportional to 306,291.48, 459,400.74 and 81,668.76 is: 122,493.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,291.48 : 459,400.74 = 81,668.76 : x
  2. Step 2: Convert to fraction form
    306,291.48/459,400.74 = 81,668.76/x
  3. Step 3: Cross multiply
    306,291.48x = 459,400.74 × 81,668.76
  4. Step 4: Simplify right side
    306,291.48x = 37,518,688,778.88
  5. Step 5: Solve for x
    x = 37,518,688,778.88/306,291.48
  6. Step 6: Final answer
    x = 122,493.41

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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.