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Finding the Fourth Proportional to 303,435.15, 455,152.73 and 154,135.95

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Solution

The fourth proportional to 303,435.15, 455,152.73 and 154,135.95 is: 231,203.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,435.15 : 455,152.73 = 154,135.95 : x
  2. Step 2: Convert to fraction form
    303,435.15/455,152.73 = 154,135.95/x
  3. Step 3: Cross multiply
    303,435.15x = 455,152.73 × 154,135.95
  4. Step 4: Simplify right side
    303,435.15x = 70,155,397,662.96
  5. Step 5: Solve for x
    x = 70,155,397,662.96/303,435.15
  6. Step 6: Final answer
    x = 231,203.93

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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.