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Finding the Fourth Proportional to 289,457.89, 434,228.90 and 89,794.19

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Solution

The fourth proportional to 289,457.89, 434,228.90 and 89,794.19 is: 134,704.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,457.89 : 434,228.90 = 89,794.19 : x
  2. Step 2: Convert to fraction form
    289,457.89/434,228.90 = 89,794.19/x
  3. Step 3: Cross multiply
    289,457.89x = 434,228.90 × 89,794.19
  4. Step 4: Simplify right side
    289,457.89x = 38,991,232,986.69
  5. Step 5: Solve for x
    x = 38,991,232,986.69/289,457.89
  6. Step 6: Final answer
    x = 134,704.34

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1.5x scale

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.