Home / 289,619.40-434,429.10-219,635.40

Finding the Fourth Proportional to 289,619.40, 434,429.10 and 219,635.40

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Solution

The fourth proportional to 289,619.40, 434,429.10 and 219,635.40 is: 329,453.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,619.40 : 434,429.10 = 219,635.40 : x
  2. Step 2: Convert to fraction form
    289,619.40/434,429.10 = 219,635.40/x
  3. Step 3: Cross multiply
    289,619.40x = 434,429.10 × 219,635.40
  4. Step 4: Simplify right side
    289,619.40x = 95,416,009,150.14
  5. Step 5: Solve for x
    x = 95,416,009,150.14/289,619.40
  6. Step 6: Final answer
    x = 329,453.10

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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.