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Finding the Fourth Proportional to 486,590.70, 729,886.05 and 171,006.60

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Solution

The fourth proportional to 486,590.70, 729,886.05 and 171,006.60 is: 256,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,590.70 : 729,886.05 = 171,006.60 : x
  2. Step 2: Convert to fraction form
    486,590.70/729,886.05 = 171,006.60/x
  3. Step 3: Cross multiply
    486,590.70x = 729,886.05 × 171,006.60
  4. Step 4: Simplify right side
    486,590.70x = 124,815,331,797.93
  5. Step 5: Solve for x
    x = 124,815,331,797.93/486,590.70
  6. Step 6: Final answer
    x = 256,509.90

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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.