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Finding the Fourth Proportional to 255,994.61, 384,490.21 and 208,644.69

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Solution

The fourth proportional to 255,994.61, 384,490.21 and 208,644.69 is: 313,373.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,994.61 : 384,490.21 = 208,644.69 : x
  2. Step 2: Convert to fraction form
    255,994.61/384,490.21 = 208,644.69/x
  3. Step 3: Cross multiply
    255,994.61x = 384,490.21 × 208,644.69
  4. Step 4: Simplify right side
    255,994.61x = 80,221,840,673.48
  5. Step 5: Solve for x
    x = 80,221,840,673.48/255,994.61
  6. Step 6: Final answer
    x = 313,373.16

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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.