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Finding the Fourth Proportional to 255,328.20, 382,992.30 and 68,339.70

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Solution

The fourth proportional to 255,328.20, 382,992.30 and 68,339.70 is: 102,509.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,328.20 : 382,992.30 = 68,339.70 : x
  2. Step 2: Convert to fraction form
    255,328.20/382,992.30 = 68,339.70/x
  3. Step 3: Cross multiply
    255,328.20x = 382,992.30 × 68,339.70
  4. Step 4: Simplify right side
    255,328.20x = 26,173,578,884.31
  5. Step 5: Solve for x
    x = 26,173,578,884.31/255,328.20
  6. Step 6: Final answer
    x = 102,509.55

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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.