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Finding the Fourth Proportional to 315,894.84, 473,772.39 and 91,206.51

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Solution

The fourth proportional to 315,894.84, 473,772.39 and 91,206.51 is: 136,789.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,894.84 : 473,772.39 = 91,206.51 : x
  2. Step 2: Convert to fraction form
    315,894.84/473,772.39 = 91,206.51/x
  3. Step 3: Cross multiply
    315,894.84x = 473,772.39 × 91,206.51
  4. Step 4: Simplify right side
    315,894.84x = 43,211,124,620.62
  5. Step 5: Solve for x
    x = 43,211,124,620.62/315,894.84
  6. Step 6: Final answer
    x = 136,789.59

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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.