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Finding the Fourth Proportional to 255,673.33, 383,510.03 and 78,180.35

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Solution

The fourth proportional to 255,673.33, 383,510.03 and 78,180.35 is: 117,270.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,673.33 : 383,510.03 = 78,180.35 : x
  2. Step 2: Convert to fraction form
    255,673.33/383,510.03 = 78,180.35/x
  3. Step 3: Cross multiply
    255,673.33x = 383,510.03 × 78,180.35
  4. Step 4: Simplify right side
    255,673.33x = 29,982,948,373.91
  5. Step 5: Solve for x
    x = 29,982,948,373.91/255,673.33
  6. Step 6: Final answer
    x = 117,270.54

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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.