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Finding the Fourth Proportional to 353,357.84, 487,631.44 and 200,425.79

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Solution

The fourth proportional to 353,357.84, 487,631.44 and 200,425.79 is: 276,586.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,357.84 : 487,631.44 = 200,425.79 : x
  2. Step 2: Convert to fraction form
    353,357.84/487,631.44 = 200,425.79/x
  3. Step 3: Cross multiply
    353,357.84x = 487,631.44 × 200,425.79
  4. Step 4: Simplify right side
    353,357.84x = 97,733,918,060.45
  5. Step 5: Solve for x
    x = 97,733,918,060.45/353,357.84
  6. Step 6: Final answer
    x = 276,586.24

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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.