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Finding the Fourth Proportional to 303,915.69, 455,873.67 and 79,275.83

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Solution

The fourth proportional to 303,915.69, 455,873.67 and 79,275.83 is: 118,913.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,915.69 : 455,873.67 = 79,275.83 : x
  2. Step 2: Convert to fraction form
    303,915.69/455,873.67 = 79,275.83/x
  3. Step 3: Cross multiply
    303,915.69x = 455,873.67 × 79,275.83
  4. Step 4: Simplify right side
    303,915.69x = 36,139,761,285.03
  5. Step 5: Solve for x
    x = 36,139,761,285.03/303,915.69
  6. Step 6: Final answer
    x = 118,913.77

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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.