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Finding the Fourth Proportional to 210,669.90, 315,957.77 and 60,876.81

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Solution

The fourth proportional to 210,669.90, 315,957.77 and 60,876.81 is: 91,301.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,669.90 : 315,957.77 = 60,876.81 : x
  2. Step 2: Convert to fraction form
    210,669.90/315,957.77 = 60,876.81/x
  3. Step 3: Cross multiply
    210,669.90x = 315,957.77 × 60,876.81
  4. Step 4: Simplify right side
    210,669.90x = 19,234,501,132.31
  5. Step 5: Solve for x
    x = 19,234,501,132.31/210,669.90
  6. Step 6: Final answer
    x = 91,301.61

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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.