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Finding the Fourth Proportional to 417,628.28, 626,441.70 and 151,388.12

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Solution

The fourth proportional to 417,628.28, 626,441.70 and 151,388.12 is: 227,081.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,628.28 : 626,441.70 = 151,388.12 : x
  2. Step 2: Convert to fraction form
    417,628.28/626,441.70 = 151,388.12/x
  3. Step 3: Cross multiply
    417,628.28x = 626,441.70 × 151,388.12
  4. Step 4: Simplify right side
    417,628.28x = 94,835,831,252.60
  5. Step 5: Solve for x
    x = 94,835,831,252.60/417,628.28
  6. Step 6: Final answer
    x = 227,081.92

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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.