Home / 210,510,565.43-290,489,832.80-122,398,311.93

Finding the Fourth Proportional to 210,510,565.43, 290,489,832.80 and 122,398,311.93

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Solution

The fourth proportional to 210,510,565.43, 290,489,832.80 and 122,398,311.93 is: 168,901,095.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,510,565.43 : 290,489,832.80 = 122,398,311.93 : x
  2. Step 2: Convert to fraction form
    210,510,565.43/290,489,832.80 = 122,398,311.93/x
  3. Step 3: Cross multiply
    210,510,565.43x = 290,489,832.80 × 122,398,311.93
  4. Step 4: Simplify right side
    210,510,565.43x = 35,555,465,166,305,608
  5. Step 5: Solve for x
    x = 35,555,465,166,305,608/210,510,565.43
  6. Step 6: Final answer
    x = 168,901,095.75

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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.