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Finding the Fourth Proportional to 303,927.60, 455,235.30 and 197,639.40

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Solution

The fourth proportional to 303,927.60, 455,235.30 and 197,639.40 is: 296,032.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,927.60 : 455,235.30 = 197,639.40 : x
  2. Step 2: Convert to fraction form
    303,927.60/455,235.30 = 197,639.40/x
  3. Step 3: Cross multiply
    303,927.60x = 455,235.30 × 197,639.40
  4. Step 4: Simplify right side
    303,927.60x = 89,972,431,550.82
  5. Step 5: Solve for x
    x = 89,972,431,550.82/303,927.60
  6. Step 6: Final answer
    x = 296,032.45

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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.