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Finding the Fourth Proportional to 332,715.78, 498,601.89 and 257,485.73

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Solution

The fourth proportional to 332,715.78, 498,601.89 and 257,485.73 is: 385,863.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,715.78 : 498,601.89 = 257,485.73 : x
  2. Step 2: Convert to fraction form
    332,715.78/498,601.89 = 257,485.73/x
  3. Step 3: Cross multiply
    332,715.78x = 498,601.89 × 257,485.73
  4. Step 4: Simplify right side
    332,715.78x = 128,382,869,133.02
  5. Step 5: Solve for x
    x = 128,382,869,133.02/332,715.78
  6. Step 6: Final answer
    x = 385,863.48

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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.