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Finding the Fourth Proportional to 253,285.32, 379,928.45 and 103,525.50

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Solution

The fourth proportional to 253,285.32, 379,928.45 and 103,525.50 is: 155,288.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,285.32 : 379,928.45 = 103,525.50 : x
  2. Step 2: Convert to fraction form
    253,285.32/379,928.45 = 103,525.50/x
  3. Step 3: Cross multiply
    253,285.32x = 379,928.45 × 103,525.50
  4. Step 4: Simplify right side
    253,285.32x = 39,332,282,750.48
  5. Step 5: Solve for x
    x = 39,332,282,750.48/253,285.32
  6. Step 6: Final answer
    x = 155,288.44

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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.