Home / 266,121,428.60-399,480,741.30-205,804,551.80

Finding the Fourth Proportional to 266,121,428.60, 399,480,741.30 and 205,804,551.80

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Solution

The fourth proportional to 266,121,428.60, 399,480,741.30 and 205,804,551.80 is: 308,937,748.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,121,428.60 : 399,480,741.30 = 205,804,551.80 : x
  2. Step 2: Convert to fraction form
    266,121,428.60/399,480,741.30 = 205,804,551.80/x
  3. Step 3: Cross multiply
    266,121,428.60x = 399,480,741.30 × 205,804,551.80
  4. Step 4: Simplify right side
    266,121,428.60x = 82,214,954,915,978,256
  5. Step 5: Solve for x
    x = 82,214,954,915,978,256/266,121,428.60
  6. Step 6: Final answer
    x = 308,937,748.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.