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Finding the Fourth Proportional to 289,711.04, 434,549.64 and 79,333.52

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Solution

The fourth proportional to 289,711.04, 434,549.64 and 79,333.52 is: 118,995.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,711.04 : 434,549.64 = 79,333.52 : x
  2. Step 2: Convert to fraction form
    289,711.04/434,549.64 = 79,333.52/x
  3. Step 3: Cross multiply
    289,711.04x = 434,549.64 × 79,333.52
  4. Step 4: Simplify right side
    289,711.04x = 34,474,352,555.93
  5. Step 5: Solve for x
    x = 34,474,352,555.93/289,711.04
  6. Step 6: Final answer
    x = 118,995.65

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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.