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Finding the Fourth Proportional to 478,461.72, 717,832.90 and 141,511.22

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Solution

The fourth proportional to 478,461.72, 717,832.90 and 141,511.22 is: 212,308.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,461.72 : 717,832.90 = 141,511.22 : x
  2. Step 2: Convert to fraction form
    478,461.72/717,832.90 = 141,511.22/x
  3. Step 3: Cross multiply
    478,461.72x = 717,832.90 × 141,511.22
  4. Step 4: Simplify right side
    478,461.72x = 101,581,409,435.14
  5. Step 5: Solve for x
    x = 101,581,409,435.14/478,461.72
  6. Step 6: Final answer
    x = 212,308.33

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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.