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Finding the Fourth Proportional to 518,140.30, 777,319.80 and 163,190.20

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Solution

The fourth proportional to 518,140.30, 777,319.80 and 163,190.20 is: 244,819.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,140.30 : 777,319.80 = 163,190.20 : x
  2. Step 2: Convert to fraction form
    518,140.30/777,319.80 = 163,190.20/x
  3. Step 3: Cross multiply
    518,140.30x = 777,319.80 × 163,190.20
  4. Step 4: Simplify right side
    518,140.30x = 126,850,973,625.96
  5. Step 5: Solve for x
    x = 126,850,973,625.96/518,140.30
  6. Step 6: Final answer
    x = 244,819.74

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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.