Home / 377,280.28-520,382.96-256,211.20

Finding the Fourth Proportional to 377,280.28, 520,382.96 and 256,211.20

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Solution

The fourth proportional to 377,280.28, 520,382.96 and 256,211.20 is: 353,392.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,280.28 : 520,382.96 = 256,211.20 : x
  2. Step 2: Convert to fraction form
    377,280.28/520,382.96 = 256,211.20/x
  3. Step 3: Cross multiply
    377,280.28x = 520,382.96 × 256,211.20
  4. Step 4: Simplify right side
    377,280.28x = 133,327,940,039.24
  5. Step 5: Solve for x
    x = 133,327,940,039.24/377,280.28
  6. Step 6: Final answer
    x = 353,392.29

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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.