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Finding the Fourth Proportional to 387,250.20, 580,875.30 and 102,940.20

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Solution

The fourth proportional to 387,250.20, 580,875.30 and 102,940.20 is: 154,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,250.20 : 580,875.30 = 102,940.20 : x
  2. Step 2: Convert to fraction form
    387,250.20/580,875.30 = 102,940.20/x
  3. Step 3: Cross multiply
    387,250.20x = 580,875.30 × 102,940.20
  4. Step 4: Simplify right side
    387,250.20x = 59,795,419,557.06
  5. Step 5: Solve for x
    x = 59,795,419,557.06/387,250.20
  6. Step 6: Final answer
    x = 154,410.30

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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.