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Finding the Fourth Proportional to 319,178.88, 478,765.44 and 122,186.88

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Solution

The fourth proportional to 319,178.88, 478,765.44 and 122,186.88 is: 183,279.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,178.88 : 478,765.44 = 122,186.88 : x
  2. Step 2: Convert to fraction form
    319,178.88/478,765.44 = 122,186.88/x
  3. Step 3: Cross multiply
    319,178.88x = 478,765.44 × 122,186.88
  4. Step 4: Simplify right side
    319,178.88x = 58,498,855,365.43
  5. Step 5: Solve for x
    x = 58,498,855,365.43/319,178.88
  6. Step 6: Final answer
    x = 183,279.22

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1.5x scale

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.