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Finding the Fourth Proportional to 303,605.20, 455,683.20 and 153,949.60

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Solution

The fourth proportional to 303,605.20, 455,683.20 and 153,949.60 is: 231,064.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,605.20 : 455,683.20 = 153,949.60 : x
  2. Step 2: Convert to fraction form
    303,605.20/455,683.20 = 153,949.60/x
  3. Step 3: Cross multiply
    303,605.20x = 455,683.20 × 153,949.60
  4. Step 4: Simplify right side
    303,605.20x = 70,152,246,366.72
  5. Step 5: Solve for x
    x = 70,152,246,366.72/303,605.20
  6. Step 6: Final answer
    x = 231,064.05

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1.5x scale

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.