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Finding the Fourth Proportional to 478,944.72, 718,417.08 and 212,642.64

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Solution

The fourth proportional to 478,944.72, 718,417.08 and 212,642.64 is: 318,963.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,944.72 : 718,417.08 = 212,642.64 : x
  2. Step 2: Convert to fraction form
    478,944.72/718,417.08 = 212,642.64/x
  3. Step 3: Cross multiply
    478,944.72x = 718,417.08 × 212,642.64
  4. Step 4: Simplify right side
    478,944.72x = 152,766,104,512.29
  5. Step 5: Solve for x
    x = 152,766,104,512.29/478,944.72
  6. Step 6: Final answer
    x = 318,963.96

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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.