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Finding the Fourth Proportional to 518,910.20, 778,292.40 and 163,960.10

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Solution

The fourth proportional to 518,910.20, 778,292.40 and 163,960.10 is: 245,917.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,910.20 : 778,292.40 = 163,960.10 : x
  2. Step 2: Convert to fraction form
    518,910.20/778,292.40 = 163,960.10/x
  3. Step 3: Cross multiply
    518,910.20x = 778,292.40 × 163,960.10
  4. Step 4: Simplify right side
    518,910.20x = 127,608,899,733.24
  5. Step 5: Solve for x
    x = 127,608,899,733.24/518,910.20
  6. Step 6: Final answer
    x = 245,917.12

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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.