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Finding the Fourth Proportional to 350,219.28, 525,380.76 and 128,586

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Solution

The fourth proportional to 350,219.28, 525,380.76 and 128,586 is: 192,898.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,219.28 : 525,380.76 = 128,586 : x
  2. Step 2: Convert to fraction form
    350,219.28/525,380.76 = 128,586/x
  3. Step 3: Cross multiply
    350,219.28x = 525,380.76 × 128,586
  4. Step 4: Simplify right side
    350,219.28x = 67,556,610,405.36
  5. Step 5: Solve for x
    x = 67,556,610,405.36/350,219.28
  6. Step 6: Final answer
    x = 192,898.03

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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.