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Finding the Fourth Proportional to 289,479.88, 434,232 and 79,117.24

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Solution

The fourth proportional to 289,479.88, 434,232 and 79,117.24 is: 118,679.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,479.88 : 434,232 = 79,117.24 : x
  2. Step 2: Convert to fraction form
    289,479.88/434,232 = 79,117.24/x
  3. Step 3: Cross multiply
    289,479.88x = 434,232 × 79,117.24
  4. Step 4: Simplify right side
    289,479.88x = 34,355,237,359.68
  5. Step 5: Solve for x
    x = 34,355,237,359.68/289,479.88
  6. Step 6: Final answer
    x = 118,679.19

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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.