Home / 289,719.40-434,579.10-188,242.60

Finding the Fourth Proportional to 289,719.40, 434,579.10 and 188,242.60

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Solution

The fourth proportional to 289,719.40, 434,579.10 and 188,242.60 is: 282,363.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,719.40 : 434,579.10 = 188,242.60 : x
  2. Step 2: Convert to fraction form
    289,719.40/434,579.10 = 188,242.60/x
  3. Step 3: Cross multiply
    289,719.40x = 434,579.10 × 188,242.60
  4. Step 4: Simplify right side
    289,719.40x = 81,806,299,689.66
  5. Step 5: Solve for x
    x = 81,806,299,689.66/289,719.40
  6. Step 6: Final answer
    x = 282,363.90

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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.