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Finding the Fourth Proportional to 373,406.49, 515,280.69 and 212,239.17

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Solution

The fourth proportional to 373,406.49, 515,280.69 and 212,239.17 is: 292,878.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,406.49 : 515,280.69 = 212,239.17 : x
  2. Step 2: Convert to fraction form
    373,406.49/515,280.69 = 212,239.17/x
  3. Step 3: Cross multiply
    373,406.49x = 515,280.69 × 212,239.17
  4. Step 4: Simplify right side
    373,406.49x = 109,362,745,962.63
  5. Step 5: Solve for x
    x = 109,362,745,962.63/373,406.49
  6. Step 6: Final answer
    x = 292,878.54

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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.