Home / 210,611.76-290,839.32-135,292.56

Finding the Fourth Proportional to 210,611.76, 290,839.32 and 135,292.56

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Solution

The fourth proportional to 210,611.76, 290,839.32 and 135,292.56 is: 186,829.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,611.76 : 290,839.32 = 135,292.56 : x
  2. Step 2: Convert to fraction form
    210,611.76/290,839.32 = 135,292.56/x
  3. Step 3: Cross multiply
    210,611.76x = 290,839.32 × 135,292.56
  4. Step 4: Simplify right side
    210,611.76x = 39,348,396,151.46
  5. Step 5: Solve for x
    x = 39,348,396,151.46/210,611.76
  6. Step 6: Final answer
    x = 186,829.06

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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.