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Finding the Fourth Proportional to 640,226.30, 960,388.06 and 190,912.02

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Solution

The fourth proportional to 640,226.30, 960,388.06 and 190,912.02 is: 286,382.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,226.30 : 960,388.06 = 190,912.02 : x
  2. Step 2: Convert to fraction form
    640,226.30/960,388.06 = 190,912.02/x
  3. Step 3: Cross multiply
    640,226.30x = 960,388.06 × 190,912.02
  4. Step 4: Simplify right side
    640,226.30x = 183,349,624,518.48
  5. Step 5: Solve for x
    x = 183,349,624,518.48/640,226.30
  6. Step 6: Final answer
    x = 286,382.53

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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.