Home / 255,426.24-383,139.12-68,432.64

Finding the Fourth Proportional to 255,426.24, 383,139.12 and 68,432.64

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Solution

The fourth proportional to 255,426.24, 383,139.12 and 68,432.64 is: 102,648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,426.24 : 383,139.12 = 68,432.64 : x
  2. Step 2: Convert to fraction form
    255,426.24/383,139.12 = 68,432.64/x
  3. Step 3: Cross multiply
    255,426.24x = 383,139.12 × 68,432.64
  4. Step 4: Simplify right side
    255,426.24x = 26,219,221,468.88
  5. Step 5: Solve for x
    x = 26,219,221,468.88/255,426.24
  6. Step 6: Final answer
    x = 102,648.90

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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.