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Finding the Fourth Proportional to 255,612.91, 383,377.79 and 120,676.72

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Solution

The fourth proportional to 255,612.91, 383,377.79 and 120,676.72 is: 180,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,612.91 : 383,377.79 = 120,676.72 : x
  2. Step 2: Convert to fraction form
    255,612.91/383,377.79 = 120,676.72/x
  3. Step 3: Cross multiply
    255,612.91x = 383,377.79 × 120,676.72
  4. Step 4: Simplify right side
    255,612.91x = 46,264,773,561.30
  5. Step 5: Solve for x
    x = 46,264,773,561.30/255,612.91
  6. Step 6: Final answer
    x = 180,995.45

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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.