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Finding the Fourth Proportional to 487,516.59, 731,366.43 and 221,295.84

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Solution

The fourth proportional to 487,516.59, 731,366.43 and 221,295.84 is: 331,985.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,516.59 : 731,366.43 = 221,295.84 : x
  2. Step 2: Convert to fraction form
    487,516.59/731,366.43 = 221,295.84/x
  3. Step 3: Cross multiply
    487,516.59x = 731,366.43 × 221,295.84
  4. Step 4: Simplify right side
    487,516.59x = 161,848,348,474.65
  5. Step 5: Solve for x
    x = 161,848,348,474.65/487,516.59
  6. Step 6: Final answer
    x = 331,985.31

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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.