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Finding the Fourth Proportional to 255,901.91, 383,769.71 and 85,077.64

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Solution

The fourth proportional to 255,901.91, 383,769.71 and 85,077.64 is: 127,588.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,901.91 : 383,769.71 = 85,077.64 : x
  2. Step 2: Convert to fraction form
    255,901.91/383,769.71 = 85,077.64/x
  3. Step 3: Cross multiply
    255,901.91x = 383,769.71 × 85,077.64
  4. Step 4: Simplify right side
    255,901.91x = 32,650,218,886.05
  5. Step 5: Solve for x
    x = 32,650,218,886.05/255,901.91
  6. Step 6: Final answer
    x = 127,588.80

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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.