Home / 210,369,520.80-290,338,778.22-121,059,629.52

Finding the Fourth Proportional to 210,369,520.80, 290,338,778.22 and 121,059,629.52

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Solution

The fourth proportional to 210,369,520.80, 290,338,778.22 and 121,059,629.52 is: 167,078,884.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,369,520.80 : 290,338,778.22 = 121,059,629.52 : x
  2. Step 2: Convert to fraction form
    210,369,520.80/290,338,778.22 = 121,059,629.52/x
  3. Step 3: Cross multiply
    210,369,520.80x = 290,338,778.22 × 121,059,629.52
  4. Step 4: Simplify right side
    210,369,520.80x = 35,148,304,926,602,648
  5. Step 5: Solve for x
    x = 35,148,304,926,602,648/210,369,520.80
  6. Step 6: Final answer
    x = 167,078,884.78

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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.