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Finding the Fourth Proportional to 378,257.60, 566,608.80 and 260,062.40

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Solution

The fourth proportional to 378,257.60, 566,608.80 and 260,062.40 is: 389,558.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,257.60 : 566,608.80 = 260,062.40 : x
  2. Step 2: Convert to fraction form
    378,257.60/566,608.80 = 260,062.40/x
  3. Step 3: Cross multiply
    378,257.60x = 566,608.80 × 260,062.40
  4. Step 4: Simplify right side
    378,257.60x = 147,353,644,389.12
  5. Step 5: Solve for x
    x = 147,353,644,389.12/378,257.60
  6. Step 6: Final answer
    x = 389,558.98

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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.