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Finding the Fourth Proportional to 378,902.80, 567,605.40 and 245,875.60

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Solution

The fourth proportional to 378,902.80, 567,605.40 and 245,875.60 is: 368,327.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,902.80 : 567,605.40 = 245,875.60 : x
  2. Step 2: Convert to fraction form
    378,902.80/567,605.40 = 245,875.60/x
  3. Step 3: Cross multiply
    378,902.80x = 567,605.40 × 245,875.60
  4. Step 4: Simplify right side
    378,902.80x = 139,560,318,288.24
  5. Step 5: Solve for x
    x = 139,560,318,288.24/378,902.80
  6. Step 6: Final answer
    x = 368,327.49

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1.5x scale

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.