Home / 289,400.42-434,202.69-89,771.06

Finding the Fourth Proportional to 289,400.42, 434,202.69 and 89,771.06

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Solution

The fourth proportional to 289,400.42, 434,202.69 and 89,771.06 is: 134,688.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,400.42 : 434,202.69 = 89,771.06 : x
  2. Step 2: Convert to fraction form
    289,400.42/434,202.69 = 89,771.06/x
  3. Step 3: Cross multiply
    289,400.42x = 434,202.69 × 89,771.06
  4. Step 4: Simplify right side
    289,400.42x = 38,978,835,736.15
  5. Step 5: Solve for x
    x = 38,978,835,736.15/289,400.42
  6. Step 6: Final answer
    x = 134,688.25

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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.