Home / 319,022.88-478,597.26-91,320.66

Finding the Fourth Proportional to 319,022.88, 478,597.26 and 91,320.66

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Solution

The fourth proportional to 319,022.88, 478,597.26 and 91,320.66 is: 136,999.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,022.88 : 478,597.26 = 91,320.66 : x
  2. Step 2: Convert to fraction form
    319,022.88/478,597.26 = 91,320.66/x
  3. Step 3: Cross multiply
    319,022.88x = 478,597.26 × 91,320.66
  4. Step 4: Simplify right side
    319,022.88x = 43,705,817,657.39
  5. Step 5: Solve for x
    x = 43,705,817,657.39/319,022.88
  6. Step 6: Final answer
    x = 136,999.01

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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.