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Finding the Fourth Proportional to 368,270.70, 551,822.85 and 308,784.30

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Solution

The fourth proportional to 368,270.70, 551,822.85 and 308,784.30 is: 462,687.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,270.70 : 551,822.85 = 308,784.30 : x
  2. Step 2: Convert to fraction form
    368,270.70/551,822.85 = 308,784.30/x
  3. Step 3: Cross multiply
    368,270.70x = 551,822.85 × 308,784.30
  4. Step 4: Simplify right side
    368,270.70x = 170,394,232,461.26
  5. Step 5: Solve for x
    x = 170,394,232,461.26/368,270.70
  6. Step 6: Final answer
    x = 462,687.45

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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.