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Finding the Fourth Proportional to 208,794.39, 313,089.53 and 145,644.77

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Solution

The fourth proportional to 208,794.39, 313,089.53 and 145,644.77 is: 218,395.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,794.39 : 313,089.53 = 145,644.77 : x
  2. Step 2: Convert to fraction form
    208,794.39/313,089.53 = 145,644.77/x
  3. Step 3: Cross multiply
    208,794.39x = 313,089.53 × 145,644.77
  4. Step 4: Simplify right side
    208,794.39x = 45,599,850,292.59
  5. Step 5: Solve for x
    x = 45,599,850,292.59/208,794.39
  6. Step 6: Final answer
    x = 218,395.96

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1.5x scale

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.