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Finding the Fourth Proportional to 478,212.88, 717,152.46 and 141,164.32

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Solution

The fourth proportional to 478,212.88, 717,152.46 and 141,164.32 is: 211,697.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,212.88 : 717,152.46 = 141,164.32 : x
  2. Step 2: Convert to fraction form
    478,212.88/717,152.46 = 141,164.32/x
  3. Step 3: Cross multiply
    478,212.88x = 717,152.46 × 141,164.32
  4. Step 4: Simplify right side
    478,212.88x = 101,236,339,352.23
  5. Step 5: Solve for x
    x = 101,236,339,352.23/478,212.88
  6. Step 6: Final answer
    x = 211,697.22

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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.