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Finding the Fourth Proportional to 253,458.27, 349,772.51 and 138,737.50

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Solution

The fourth proportional to 253,458.27, 349,772.51 and 138,737.50 is: 191,457.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,458.27 : 349,772.51 = 138,737.50 : x
  2. Step 2: Convert to fraction form
    253,458.27/349,772.51 = 138,737.50/x
  3. Step 3: Cross multiply
    253,458.27x = 349,772.51 × 138,737.50
  4. Step 4: Simplify right side
    253,458.27x = 48,526,563,078.54
  5. Step 5: Solve for x
    x = 48,526,563,078.54/253,458.27
  6. Step 6: Final answer
    x = 191,457.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.