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Finding the Fourth Proportional to 187,285.50, 280,928.52 and 76,477.50

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Solution

The fourth proportional to 187,285.50, 280,928.52 and 76,477.50 is: 114,716.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,285.50 : 280,928.52 = 76,477.50 : x
  2. Step 2: Convert to fraction form
    187,285.50/280,928.52 = 76,477.50/x
  3. Step 3: Cross multiply
    187,285.50x = 280,928.52 × 76,477.50
  4. Step 4: Simplify right side
    187,285.50x = 21,484,710,888.30
  5. Step 5: Solve for x
    x = 21,484,710,888.30/187,285.50
  6. Step 6: Final answer
    x = 114,716.36

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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.