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Finding the Fourth Proportional to 522,686.79, 783,936.66 and 138,438.27

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Solution

The fourth proportional to 522,686.79, 783,936.66 and 138,438.27 is: 207,632.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,686.79 : 783,936.66 = 138,438.27 : x
  2. Step 2: Convert to fraction form
    522,686.79/783,936.66 = 138,438.27/x
  3. Step 3: Cross multiply
    522,686.79x = 783,936.66 × 138,438.27
  4. Step 4: Simplify right side
    522,686.79x = 108,526,834,999.98
  5. Step 5: Solve for x
    x = 108,526,834,999.98/522,686.79
  6. Step 6: Final answer
    x = 207,632.63

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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.