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Finding the Fourth Proportional to 286,219.96, 394,963.72 and 158,885.50

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Solution

The fourth proportional to 286,219.96, 394,963.72 and 158,885.50 is: 219,250.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,219.96 : 394,963.72 = 158,885.50 : x
  2. Step 2: Convert to fraction form
    286,219.96/394,963.72 = 158,885.50/x
  3. Step 3: Cross multiply
    286,219.96x = 394,963.72 × 158,885.50
  4. Step 4: Simplify right side
    286,219.96x = 62,754,008,134.06
  5. Step 5: Solve for x
    x = 62,754,008,134.06/286,219.96
  6. Step 6: Final answer
    x = 219,250.98

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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.