Home / 255,407.28-383,167.26-77,928

Finding the Fourth Proportional to 255,407.28, 383,167.26 and 77,928

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Solution

The fourth proportional to 255,407.28, 383,167.26 and 77,928 is: 116,909.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,407.28 : 383,167.26 = 77,928 : x
  2. Step 2: Convert to fraction form
    255,407.28/383,167.26 = 77,928/x
  3. Step 3: Cross multiply
    255,407.28x = 383,167.26 × 77,928
  4. Step 4: Simplify right side
    255,407.28x = 29,859,458,237.28
  5. Step 5: Solve for x
    x = 29,859,458,237.28/255,407.28
  6. Step 6: Final answer
    x = 116,909.19

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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.