Home / 289,288.36-434,213.16-139,634.08

Finding the Fourth Proportional to 289,288.36, 434,213.16 and 139,634.08

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Solution

The fourth proportional to 289,288.36, 434,213.16 and 139,634.08 is: 209,586.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,288.36 : 434,213.16 = 139,634.08 : x
  2. Step 2: Convert to fraction form
    289,288.36/434,213.16 = 139,634.08/x
  3. Step 3: Cross multiply
    289,288.36x = 434,213.16 × 139,634.08
  4. Step 4: Simplify right side
    289,288.36x = 60,630,955,120.49
  5. Step 5: Solve for x
    x = 60,630,955,120.49/289,288.36
  6. Step 6: Final answer
    x = 209,586.57

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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.