Home / 272,618.14-408,943.55-85,629.64

Finding the Fourth Proportional to 272,618.14, 408,943.55 and 85,629.64

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Solution

The fourth proportional to 272,618.14, 408,943.55 and 85,629.64 is: 128,449.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,618.14 : 408,943.55 = 85,629.64 : x
  2. Step 2: Convert to fraction form
    272,618.14/408,943.55 = 85,629.64/x
  3. Step 3: Cross multiply
    272,618.14x = 408,943.55 × 85,629.64
  4. Step 4: Simplify right side
    272,618.14x = 35,017,688,966.82
  5. Step 5: Solve for x
    x = 35,017,688,966.82/272,618.14
  6. Step 6: Final answer
    x = 128,449.59

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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.