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Finding the Fourth Proportional to 377,280.53, 520,383.31 and 256,211.45

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Solution

The fourth proportional to 377,280.53, 520,383.31 and 256,211.45 is: 353,392.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,280.53 : 520,383.31 = 256,211.45 : x
  2. Step 2: Convert to fraction form
    377,280.53/520,383.31 = 256,211.45/x
  3. Step 3: Cross multiply
    377,280.53x = 520,383.31 × 256,211.45
  4. Step 4: Simplify right side
    377,280.53x = 133,328,159,168.45
  5. Step 5: Solve for x
    x = 133,328,159,168.45/377,280.53
  6. Step 6: Final answer
    x = 353,392.64

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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.