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Finding the Fourth Proportional to 255,478.82, 383,274.52 and 77,999.72

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Solution

The fourth proportional to 255,478.82, 383,274.52 and 77,999.72 is: 117,016.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,478.82 : 383,274.52 = 77,999.72 : x
  2. Step 2: Convert to fraction form
    255,478.82/383,274.52 = 77,999.72/x
  3. Step 3: Cross multiply
    255,478.82x = 383,274.52 × 77,999.72
  4. Step 4: Simplify right side
    255,478.82x = 29,895,303,131.76
  5. Step 5: Solve for x
    x = 29,895,303,131.76/255,478.82
  6. Step 6: Final answer
    x = 117,016.76

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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.