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Finding the Fourth Proportional to 303,970.86, 455,965.52 and 104,288.36

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Solution

The fourth proportional to 303,970.86, 455,965.52 and 104,288.36 is: 156,435.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,970.86 : 455,965.52 = 104,288.36 : x
  2. Step 2: Convert to fraction form
    303,970.86/455,965.52 = 104,288.36/x
  3. Step 3: Cross multiply
    303,970.86x = 455,965.52 × 104,288.36
  4. Step 4: Simplify right side
    303,970.86x = 47,551,893,496.08
  5. Step 5: Solve for x
    x = 47,551,893,496.08/303,970.86
  6. Step 6: Final answer
    x = 156,435.70

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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.