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Finding the Fourth Proportional to 303,856.06, 455,784.30 and 79,215.94

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Solution

The fourth proportional to 303,856.06, 455,784.30 and 79,215.94 is: 118,823.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,856.06 : 455,784.30 = 79,215.94 : x
  2. Step 2: Convert to fraction form
    303,856.06/455,784.30 = 79,215.94/x
  3. Step 3: Cross multiply
    303,856.06x = 455,784.30 × 79,215.94
  4. Step 4: Simplify right side
    303,856.06x = 36,105,381,761.74
  5. Step 5: Solve for x
    x = 36,105,381,761.74/303,856.06
  6. Step 6: Final answer
    x = 118,823.96

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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.