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Finding the Fourth Proportional to 303,340.70, 455,011.05 and 103,631.15

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Solution

The fourth proportional to 303,340.70, 455,011.05 and 103,631.15 is: 155,446.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,340.70 : 455,011.05 = 103,631.15 : x
  2. Step 2: Convert to fraction form
    303,340.70/455,011.05 = 103,631.15/x
  3. Step 3: Cross multiply
    303,340.70x = 455,011.05 × 103,631.15
  4. Step 4: Simplify right side
    303,340.70x = 47,153,318,374.21
  5. Step 5: Solve for x
    x = 47,153,318,374.21/303,340.70
  6. Step 6: Final answer
    x = 155,446.73

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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.