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Finding the Fourth Proportional to 303,410.70, 455,116.05 and 93,021.30

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Solution

The fourth proportional to 303,410.70, 455,116.05 and 93,021.30 is: 139,531.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,410.70 : 455,116.05 = 93,021.30 : x
  2. Step 2: Convert to fraction form
    303,410.70/455,116.05 = 93,021.30/x
  3. Step 3: Cross multiply
    303,410.70x = 455,116.05 × 93,021.30
  4. Step 4: Simplify right side
    303,410.70x = 42,335,486,621.87
  5. Step 5: Solve for x
    x = 42,335,486,621.87/303,410.70
  6. Step 6: Final answer
    x = 139,531.95

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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.