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Finding the Fourth Proportional to 286,393.50, 395,223.06 and 159,080.94

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Solution

The fourth proportional to 286,393.50, 395,223.06 and 159,080.94 is: 219,531.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,393.50 : 395,223.06 = 159,080.94 : x
  2. Step 2: Convert to fraction form
    286,393.50/395,223.06 = 159,080.94/x
  3. Step 3: Cross multiply
    286,393.50x = 395,223.06 × 159,080.94
  4. Step 4: Simplify right side
    286,393.50x = 62,872,455,894.48
  5. Step 5: Solve for x
    x = 62,872,455,894.48/286,393.50
  6. Step 6: Final answer
    x = 219,531.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.