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Finding the Fourth Proportional to 503,435.27, 755,070.30 and 138,611.77

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Solution

The fourth proportional to 503,435.27, 755,070.30 and 138,611.77 is: 207,894.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,435.27 : 755,070.30 = 138,611.77 : x
  2. Step 2: Convert to fraction form
    503,435.27/755,070.30 = 138,611.77/x
  3. Step 3: Cross multiply
    503,435.27x = 755,070.30 × 138,611.77
  4. Step 4: Simplify right side
    503,435.27x = 104,661,630,757.43
  5. Step 5: Solve for x
    x = 104,661,630,757.43/503,435.27
  6. Step 6: Final answer
    x = 207,894.91

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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.