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Finding the Fourth Proportional to 482,772.14, 666,157.54 and 289,134.48

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Solution

The fourth proportional to 482,772.14, 666,157.54 and 289,134.48 is: 398,964.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,772.14 : 666,157.54 = 289,134.48 : x
  2. Step 2: Convert to fraction form
    482,772.14/666,157.54 = 289,134.48/x
  3. Step 3: Cross multiply
    482,772.14x = 666,157.54 × 289,134.48
  4. Step 4: Simplify right side
    482,772.14x = 192,609,113,925.98
  5. Step 5: Solve for x
    x = 192,609,113,925.98/482,772.14
  6. Step 6: Final answer
    x = 398,964.85

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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.