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Finding the Fourth Proportional to 210,473.55, 290,536.61 and 129,933.63

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Solution

The fourth proportional to 210,473.55, 290,536.61 and 129,933.63 is: 179,359.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,473.55 : 290,536.61 = 129,933.63 : x
  2. Step 2: Convert to fraction form
    210,473.55/290,536.61 = 129,933.63/x
  3. Step 3: Cross multiply
    210,473.55x = 290,536.61 × 129,933.63
  4. Step 4: Simplify right side
    210,473.55x = 37,750,475,735.53
  5. Step 5: Solve for x
    x = 37,750,475,735.53/210,473.55
  6. Step 6: Final answer
    x = 179,359.71

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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.