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Finding the Fourth Proportional to 210,636.67, 290,830.80 and 130,174.51

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Solution

The fourth proportional to 210,636.67, 290,830.80 and 130,174.51 is: 179,734.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,636.67 : 290,830.80 = 130,174.51 : x
  2. Step 2: Convert to fraction form
    210,636.67/290,830.80 = 130,174.51/x
  3. Step 3: Cross multiply
    210,636.67x = 290,830.80 × 130,174.51
  4. Step 4: Simplify right side
    210,636.67x = 37,858,756,882.91
  5. Step 5: Solve for x
    x = 37,858,756,882.91/210,636.67
  6. Step 6: Final answer
    x = 179,734.88

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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.