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Finding the Fourth Proportional to 369,987.60, 554,738.40 and 145,212.60

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Solution

The fourth proportional to 369,987.60, 554,738.40 and 145,212.60 is: 217,723.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,987.60 : 554,738.40 = 145,212.60 : x
  2. Step 2: Convert to fraction form
    369,987.60/554,738.40 = 145,212.60/x
  3. Step 3: Cross multiply
    369,987.60x = 554,738.40 × 145,212.60
  4. Step 4: Simplify right side
    369,987.60x = 80,555,005,383.84
  5. Step 5: Solve for x
    x = 80,555,005,383.84/369,987.60
  6. Step 6: Final answer
    x = 217,723.53

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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.