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Finding the Fourth Proportional to 515,683.06, 773,507.57 and 212,066.71

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Solution

The fourth proportional to 515,683.06, 773,507.57 and 212,066.71 is: 318,093.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,683.06 : 773,507.57 = 212,066.71 : x
  2. Step 2: Convert to fraction form
    515,683.06/773,507.57 = 212,066.71/x
  3. Step 3: Cross multiply
    515,683.06x = 773,507.57 × 212,066.71
  4. Step 4: Simplify right side
    515,683.06x = 164,035,205,530.00
  5. Step 5: Solve for x
    x = 164,035,205,530.00/515,683.06
  6. Step 6: Final answer
    x = 318,093.07

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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.