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Finding the Fourth Proportional to 260,176.36, 390,322.86 and 108,375.88

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Solution

The fourth proportional to 260,176.36, 390,322.86 and 108,375.88 is: 162,588.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,176.36 : 390,322.86 = 108,375.88 : x
  2. Step 2: Convert to fraction form
    260,176.36/390,322.86 = 108,375.88/x
  3. Step 3: Cross multiply
    260,176.36x = 390,322.86 × 108,375.88
  4. Step 4: Simplify right side
    260,176.36x = 42,301,583,436.62
  5. Step 5: Solve for x
    x = 42,301,583,436.62/260,176.36
  6. Step 6: Final answer
    x = 162,588.11

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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.