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Finding the Fourth Proportional to 303,355.60, 454,990.20 and 103,685.20

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Solution

The fourth proportional to 303,355.60, 454,990.20 and 103,685.20 is: 155,513.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,355.60 : 454,990.20 = 103,685.20 : x
  2. Step 2: Convert to fraction form
    303,355.60/454,990.20 = 103,685.20/x
  3. Step 3: Cross multiply
    303,355.60x = 454,990.20 × 103,685.20
  4. Step 4: Simplify right side
    303,355.60x = 47,175,749,885.04
  5. Step 5: Solve for x
    x = 47,175,749,885.04/303,355.60
  6. Step 6: Final answer
    x = 155,513.03

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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.