Home / 521,025.30-719,156.34-306,234.36

Finding the Fourth Proportional to 521,025.30, 719,156.34 and 306,234.36

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Solution

The fourth proportional to 521,025.30, 719,156.34 and 306,234.36 is: 422,686.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,025.30 : 719,156.34 = 306,234.36 : x
  2. Step 2: Convert to fraction form
    521,025.30/719,156.34 = 306,234.36/x
  3. Step 3: Cross multiply
    521,025.30x = 719,156.34 × 306,234.36
  4. Step 4: Simplify right side
    521,025.30x = 220,230,381,519.84
  5. Step 5: Solve for x
    x = 220,230,381,519.84/521,025.30
  6. Step 6: Final answer
    x = 422,686.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.