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Finding the Fourth Proportional to 478,865.80, 718,298.70 and 163,246.60

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Solution

The fourth proportional to 478,865.80, 718,298.70 and 163,246.60 is: 244,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,865.80 : 718,298.70 = 163,246.60 : x
  2. Step 2: Convert to fraction form
    478,865.80/718,298.70 = 163,246.60/x
  3. Step 3: Cross multiply
    478,865.80x = 718,298.70 × 163,246.60
  4. Step 4: Simplify right side
    478,865.80x = 117,259,820,559.42
  5. Step 5: Solve for x
    x = 117,259,820,559.42/478,865.80
  6. Step 6: Final answer
    x = 244,869.90

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Similar ratio
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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.