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Finding the Fourth Proportional to 303,320.72, 455,260.64 and 153,665.28

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Solution

The fourth proportional to 303,320.72, 455,260.64 and 153,665.28 is: 230,639.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,320.72 : 455,260.64 = 153,665.28 : x
  2. Step 2: Convert to fraction form
    303,320.72/455,260.64 = 153,665.28/x
  3. Step 3: Cross multiply
    303,320.72x = 455,260.64 × 153,665.28
  4. Step 4: Simplify right side
    303,320.72x = 69,957,753,718.58
  5. Step 5: Solve for x
    x = 69,957,753,718.58/303,320.72
  6. Step 6: Final answer
    x = 230,639.55

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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.