Home / 255,725.47-383,603.57-78,234.02

Finding the Fourth Proportional to 255,725.47, 383,603.57 and 78,234.02

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Solution

The fourth proportional to 255,725.47, 383,603.57 and 78,234.02 is: 117,355.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,725.47 : 383,603.57 = 78,234.02 : x
  2. Step 2: Convert to fraction form
    255,725.47/383,603.57 = 78,234.02/x
  3. Step 3: Cross multiply
    255,725.47x = 383,603.57 × 78,234.02
  4. Step 4: Simplify right side
    255,725.47x = 30,010,847,058.26
  5. Step 5: Solve for x
    x = 30,010,847,058.26/255,725.47
  6. Step 6: Final answer
    x = 117,355.72

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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.