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Finding the Fourth Proportional to 185,396.40, 278,094.60 and 115,412.40

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Solution

The fourth proportional to 185,396.40, 278,094.60 and 115,412.40 is: 173,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,396.40 : 278,094.60 = 115,412.40 : x
  2. Step 2: Convert to fraction form
    185,396.40/278,094.60 = 115,412.40/x
  3. Step 3: Cross multiply
    185,396.40x = 278,094.60 × 115,412.40
  4. Step 4: Simplify right side
    185,396.40x = 32,095,565,213.04
  5. Step 5: Solve for x
    x = 32,095,565,213.04/185,396.40
  6. Step 6: Final answer
    x = 173,118.60

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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.