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Finding the Fourth Proportional to 478,815.20, 718,222.80 and 310,853.60

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Solution

The fourth proportional to 478,815.20, 718,222.80 and 310,853.60 is: 466,280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,815.20 : 718,222.80 = 310,853.60 : x
  2. Step 2: Convert to fraction form
    478,815.20/718,222.80 = 310,853.60/x
  3. Step 3: Cross multiply
    478,815.20x = 718,222.80 × 310,853.60
  4. Step 4: Simplify right side
    478,815.20x = 223,262,142,982.08
  5. Step 5: Solve for x
    x = 223,262,142,982.08/478,815.20
  6. Step 6: Final answer
    x = 466,280.40

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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.