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Finding the Fourth Proportional to 518,498.80, 777,748.20 and 163,548.70

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Solution

The fourth proportional to 518,498.80, 777,748.20 and 163,548.70 is: 245,323.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,498.80 : 777,748.20 = 163,548.70 : x
  2. Step 2: Convert to fraction form
    518,498.80/777,748.20 = 163,548.70/x
  3. Step 3: Cross multiply
    518,498.80x = 777,748.20 × 163,548.70
  4. Step 4: Simplify right side
    518,498.80x = 127,199,707,037.34
  5. Step 5: Solve for x
    x = 127,199,707,037.34/518,498.80
  6. Step 6: Final answer
    x = 245,323.05

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Similar ratio
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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.