Home / 210,647,512.68-290,715,448.20-121,342,543.12

Finding the Fourth Proportional to 210,647,512.68, 290,715,448.20 and 121,342,543.12

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Solution

The fourth proportional to 210,647,512.68, 290,715,448.20 and 121,342,543.12 is: 167,465,313.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,647,512.68 : 290,715,448.20 = 121,342,543.12 : x
  2. Step 2: Convert to fraction form
    210,647,512.68/290,715,448.20 = 121,342,543.12/x
  3. Step 3: Cross multiply
    210,647,512.68x = 290,715,448.20 × 121,342,543.12
  4. Step 4: Simplify right side
    210,647,512.68x = 35,276,151,808,858,628
  5. Step 5: Solve for x
    x = 35,276,151,808,858,628/210,647,512.68
  6. Step 6: Final answer
    x = 167,465,313.78

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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.