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Finding the Fourth Proportional to 378,010.60, 567,015.90 and 258,260.20

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Solution

The fourth proportional to 378,010.60, 567,015.90 and 258,260.20 is: 387,390.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,010.60 : 567,015.90 = 258,260.20 : x
  2. Step 2: Convert to fraction form
    378,010.60/567,015.90 = 258,260.20/x
  3. Step 3: Cross multiply
    378,010.60x = 567,015.90 × 258,260.20
  4. Step 4: Simplify right side
    378,010.60x = 146,437,639,737.18
  5. Step 5: Solve for x
    x = 146,437,639,737.18/378,010.60
  6. Step 6: Final answer
    x = 387,390.30

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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.