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Finding the Fourth Proportional to 210,847.23, 290,976.08 and 115,351.71

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Solution

The fourth proportional to 210,847.23, 290,976.08 and 115,351.71 is: 159,189.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,847.23 : 290,976.08 = 115,351.71 : x
  2. Step 2: Convert to fraction form
    210,847.23/290,976.08 = 115,351.71/x
  3. Step 3: Cross multiply
    210,847.23x = 290,976.08 × 115,351.71
  4. Step 4: Simplify right side
    210,847.23x = 33,564,588,397.10
  5. Step 5: Solve for x
    x = 33,564,588,397.10/210,847.23
  6. Step 6: Final answer
    x = 159,189.14

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1.5x scale

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.