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Finding the Fourth Proportional to 478,086.80, 717,208.10 and 141,161.52

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Solution

The fourth proportional to 478,086.80, 717,208.10 and 141,161.52 is: 211,765.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,086.80 : 717,208.10 = 141,161.52 : x
  2. Step 2: Convert to fraction form
    478,086.80/717,208.10 = 141,161.52/x
  3. Step 3: Cross multiply
    478,086.80x = 717,208.10 × 141,161.52
  4. Step 4: Simplify right side
    478,086.80x = 101,242,185,552.31
  5. Step 5: Solve for x
    x = 101,242,185,552.31/478,086.80
  6. Step 6: Final answer
    x = 211,765.28

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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.