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Finding the Fourth Proportional to 608,006.88, 912,056.90 and 208,644.48

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Solution

The fourth proportional to 608,006.88, 912,056.90 and 208,644.48 is: 312,982.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,006.88 : 912,056.90 = 208,644.48 : x
  2. Step 2: Convert to fraction form
    608,006.88/912,056.90 = 208,644.48/x
  3. Step 3: Cross multiply
    608,006.88x = 912,056.90 × 208,644.48
  4. Step 4: Simplify right side
    608,006.88x = 190,295,636,587.69
  5. Step 5: Solve for x
    x = 190,295,636,587.69/608,006.88
  6. Step 6: Final answer
    x = 312,982.70

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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.