Home / 289,719.40-434,579.10-268,724.20

Finding the Fourth Proportional to 289,719.40, 434,579.10 and 268,724.20

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Solution

The fourth proportional to 289,719.40, 434,579.10 and 268,724.20 is: 403,086.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,719.40 : 434,579.10 = 268,724.20 : x
  2. Step 2: Convert to fraction form
    289,719.40/434,579.10 = 268,724.20/x
  3. Step 3: Cross multiply
    289,719.40x = 434,579.10 × 268,724.20
  4. Step 4: Simplify right side
    289,719.40x = 116,781,920,984.22
  5. Step 5: Solve for x
    x = 116,781,920,984.22/289,719.40
  6. Step 6: Final answer
    x = 403,086.30

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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.