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Finding the Fourth Proportional to 303,078.30, 454,423.05 and 125,655.90

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Solution

The fourth proportional to 303,078.30, 454,423.05 and 125,655.90 is: 188,403.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,078.30 : 454,423.05 = 125,655.90 : x
  2. Step 2: Convert to fraction form
    303,078.30/454,423.05 = 125,655.90/x
  3. Step 3: Cross multiply
    303,078.30x = 454,423.05 × 125,655.90
  4. Step 4: Simplify right side
    303,078.30x = 57,100,937,328.50
  5. Step 5: Solve for x
    x = 57,100,937,328.50/303,078.30
  6. Step 6: Final answer
    x = 188,403.25

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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.