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Finding the Fourth Proportional to 255,216.02, 383,060.85 and 128,944.95

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Solution

The fourth proportional to 255,216.02, 383,060.85 and 128,944.95 is: 193,537.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,216.02 : 383,060.85 = 128,944.95 : x
  2. Step 2: Convert to fraction form
    255,216.02/383,060.85 = 128,944.95/x
  3. Step 3: Cross multiply
    255,216.02x = 383,060.85 × 128,944.95
  4. Step 4: Simplify right side
    255,216.02x = 49,393,762,150.21
  5. Step 5: Solve for x
    x = 49,393,762,150.21/255,216.02
  6. Step 6: Final answer
    x = 193,537.08

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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.