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Finding the Fourth Proportional to 350,627.84, 525,889.92 and 128,960

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Solution

The fourth proportional to 350,627.84, 525,889.92 and 128,960 is: 193,420.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,627.84 : 525,889.92 = 128,960 : x
  2. Step 2: Convert to fraction form
    350,627.84/525,889.92 = 128,960/x
  3. Step 3: Cross multiply
    350,627.84x = 525,889.92 × 128,960
  4. Step 4: Simplify right side
    350,627.84x = 67,818,764,083.20
  5. Step 5: Solve for x
    x = 67,818,764,083.20/350,627.84
  6. Step 6: Final answer
    x = 193,420.93

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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.