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Finding the Fourth Proportional to 478,820.70, 718,231.05 and 146,396.70

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Solution

The fourth proportional to 478,820.70, 718,231.05 and 146,396.70 is: 219,595.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,820.70 : 718,231.05 = 146,396.70 : x
  2. Step 2: Convert to fraction form
    478,820.70/718,231.05 = 146,396.70/x
  3. Step 3: Cross multiply
    478,820.70x = 718,231.05 × 146,396.70
  4. Step 4: Simplify right side
    478,820.70x = 105,146,655,557.54
  5. Step 5: Solve for x
    x = 105,146,655,557.54/478,820.70
  6. Step 6: Final answer
    x = 219,595.05

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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.