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Finding the Fourth Proportional to 285,346.44, 392,881.80 and 242,236.56

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Solution

The fourth proportional to 285,346.44, 392,881.80 and 242,236.56 is: 333,525.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,346.44 : 392,881.80 = 242,236.56 : x
  2. Step 2: Convert to fraction form
    285,346.44/392,881.80 = 242,236.56/x
  3. Step 3: Cross multiply
    285,346.44x = 392,881.80 × 242,236.56
  4. Step 4: Simplify right side
    285,346.44x = 95,170,335,718.61
  5. Step 5: Solve for x
    x = 95,170,335,718.61/285,346.44
  6. Step 6: Final answer
    x = 333,525.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.