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Finding the Fourth Proportional to 245,759.68, 368,728.29 and 85,859.23

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Solution

The fourth proportional to 245,759.68, 368,728.29 and 85,859.23 is: 128,819.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,759.68 : 368,728.29 = 85,859.23 : x
  2. Step 2: Convert to fraction form
    245,759.68/368,728.29 = 85,859.23/x
  3. Step 3: Cross multiply
    245,759.68x = 368,728.29 × 85,859.23
  4. Step 4: Simplify right side
    245,759.68x = 31,658,725,917.23
  5. Step 5: Solve for x
    x = 31,658,725,917.23/245,759.68
  6. Step 6: Final answer
    x = 128,819.85

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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.