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Finding the Fourth Proportional to 210,006.80, 315,010.20 and 119,957.08

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Solution

The fourth proportional to 210,006.80, 315,010.20 and 119,957.08 is: 179,935.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,006.80 : 315,010.20 = 119,957.08 : x
  2. Step 2: Convert to fraction form
    210,006.80/315,010.20 = 119,957.08/x
  3. Step 3: Cross multiply
    210,006.80x = 315,010.20 × 119,957.08
  4. Step 4: Simplify right side
    210,006.80x = 37,787,703,762.22
  5. Step 5: Solve for x
    x = 37,787,703,762.22/210,006.80
  6. Step 6: Final answer
    x = 179,935.62

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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.