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Finding the Fourth Proportional to 289,112.80, 433,668.72 and 148,911.52

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Solution

The fourth proportional to 289,112.80, 433,668.72 and 148,911.52 is: 223,367.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,112.80 : 433,668.72 = 148,911.52 : x
  2. Step 2: Convert to fraction form
    289,112.80/433,668.72 = 148,911.52/x
  3. Step 3: Cross multiply
    289,112.80x = 433,668.72 × 148,911.52
  4. Step 4: Simplify right side
    289,112.80x = 64,578,268,271.65
  5. Step 5: Solve for x
    x = 64,578,268,271.65/289,112.80
  6. Step 6: Final answer
    x = 223,367.03

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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.