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Finding the Fourth Proportional to 373,187.07, 514,978.73 and 212,019.75

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Solution

The fourth proportional to 373,187.07, 514,978.73 and 212,019.75 is: 292,576.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,187.07 : 514,978.73 = 212,019.75 : x
  2. Step 2: Convert to fraction form
    373,187.07/514,978.73 = 212,019.75/x
  3. Step 3: Cross multiply
    373,187.07x = 514,978.73 × 212,019.75
  4. Step 4: Simplify right side
    373,187.07x = 109,185,661,324.89
  5. Step 5: Solve for x
    x = 109,185,661,324.89/373,187.07
  6. Step 6: Final answer
    x = 292,576.22

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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.