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Finding the Fourth Proportional to 374,072.96, 515,878.80 and 292,412

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Solution

The fourth proportional to 374,072.96, 515,878.80 and 292,412 is: 403,261.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,072.96 : 515,878.80 = 292,412 : x
  2. Step 2: Convert to fraction form
    374,072.96/515,878.80 = 292,412/x
  3. Step 3: Cross multiply
    374,072.96x = 515,878.80 × 292,412
  4. Step 4: Simplify right side
    374,072.96x = 150,849,151,665.60
  5. Step 5: Solve for x
    x = 150,849,151,665.60/374,072.96
  6. Step 6: Final answer
    x = 403,261.31

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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.