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Finding the Fourth Proportional to 272,611.08, 408,884.15 and 72,946.89

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Solution

The fourth proportional to 272,611.08, 408,884.15 and 72,946.89 is: 109,411.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,611.08 : 408,884.15 = 72,946.89 : x
  2. Step 2: Convert to fraction form
    272,611.08/408,884.15 = 72,946.89/x
  3. Step 3: Cross multiply
    272,611.08x = 408,884.15 × 72,946.89
  4. Step 4: Simplify right side
    272,611.08x = 29,826,827,295.16
  5. Step 5: Solve for x
    x = 29,826,827,295.16/272,611.08
  6. Step 6: Final answer
    x = 109,411.65

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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.