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Finding the Fourth Proportional to 303,814.83, 455,680.20 and 79,156.95

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Solution

The fourth proportional to 303,814.83, 455,680.20 and 79,156.95 is: 118,724.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,814.83 : 455,680.20 = 79,156.95 : x
  2. Step 2: Convert to fraction form
    303,814.83/455,680.20 = 79,156.95/x
  3. Step 3: Cross multiply
    303,814.83x = 455,680.20 × 79,156.95
  4. Step 4: Simplify right side
    303,814.83x = 36,070,254,807.39
  5. Step 5: Solve for x
    x = 36,070,254,807.39/303,814.83
  6. Step 6: Final answer
    x = 118,724.47

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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.