Home / 256,006.19-383,882.93-78,470.39

Finding the Fourth Proportional to 256,006.19, 383,882.93 and 78,470.39

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Solution

The fourth proportional to 256,006.19, 383,882.93 and 78,470.39 is: 117,666.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,006.19 : 383,882.93 = 78,470.39 : x
  2. Step 2: Convert to fraction form
    256,006.19/383,882.93 = 78,470.39/x
  3. Step 3: Cross multiply
    256,006.19x = 383,882.93 × 78,470.39
  4. Step 4: Simplify right side
    256,006.19x = 30,123,443,231.44
  5. Step 5: Solve for x
    x = 30,123,443,231.44/256,006.19
  6. Step 6: Final answer
    x = 117,666.85

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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.