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Finding the Fourth Proportional to 286,137.32, 394,869.48 and 158,812.88

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Solution

The fourth proportional to 286,137.32, 394,869.48 and 158,812.88 is: 219,161.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,137.32 : 394,869.48 = 158,812.88 : x
  2. Step 2: Convert to fraction form
    286,137.32/394,869.48 = 158,812.88/x
  3. Step 3: Cross multiply
    286,137.32x = 394,869.48 × 158,812.88
  4. Step 4: Simplify right side
    286,137.32x = 62,710,359,342.90
  5. Step 5: Solve for x
    x = 62,710,359,342.90/286,137.32
  6. Step 6: Final answer
    x = 219,161.76

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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.