Home / 210,510,567.68-290,489,835.90-122,398,314.18

Finding the Fourth Proportional to 210,510,567.68, 290,489,835.90 and 122,398,314.18

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Solution

The fourth proportional to 210,510,567.68, 290,489,835.90 and 122,398,314.18 is: 168,901,098.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,510,567.68 : 290,489,835.90 = 122,398,314.18 : x
  2. Step 2: Convert to fraction form
    210,510,567.68/290,489,835.90 = 122,398,314.18/x
  3. Step 3: Cross multiply
    210,510,567.68x = 290,489,835.90 × 122,398,314.18
  4. Step 4: Simplify right side
    210,510,567.68x = 35,555,466,199,954,500
  5. Step 5: Solve for x
    x = 35,555,466,199,954,500/210,510,567.68
  6. Step 6: Final answer
    x = 168,901,098.85

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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.