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Finding the Fourth Proportional to 260,953.65, 360,109.91 and 153,530.60

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Solution

The fourth proportional to 260,953.65, 360,109.91 and 153,530.60 is: 211,868.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,953.65 : 360,109.91 = 153,530.60 : x
  2. Step 2: Convert to fraction form
    260,953.65/360,109.91 = 153,530.60/x
  3. Step 3: Cross multiply
    260,953.65x = 360,109.91 × 153,530.60
  4. Step 4: Simplify right side
    260,953.65x = 55,287,889,131.52
  5. Step 5: Solve for x
    x = 55,287,889,131.52/260,953.65
  6. Step 6: Final answer
    x = 211,868.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.