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Finding the Fourth Proportional to 478,213.88, 717,153.96 and 141,165.32

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Solution

The fourth proportional to 478,213.88, 717,153.96 and 141,165.32 is: 211,698.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,213.88 : 717,153.96 = 141,165.32 : x
  2. Step 2: Convert to fraction form
    478,213.88/717,153.96 = 141,165.32/x
  3. Step 3: Cross multiply
    478,213.88x = 717,153.96 × 141,165.32
  4. Step 4: Simplify right side
    478,213.88x = 101,237,268,252.67
  5. Step 5: Solve for x
    x = 101,237,268,252.67/478,213.88
  6. Step 6: Final answer
    x = 211,698.72

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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.