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Finding the Fourth Proportional to 260,604.42, 390,980.64 and 134,337.24

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Solution

The fourth proportional to 260,604.42, 390,980.64 and 134,337.24 is: 201,544.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,604.42 : 390,980.64 = 134,337.24 : x
  2. Step 2: Convert to fraction form
    260,604.42/390,980.64 = 134,337.24/x
  3. Step 3: Cross multiply
    260,604.42x = 390,980.64 × 134,337.24
  4. Step 4: Simplify right side
    260,604.42x = 52,523,260,071.03
  5. Step 5: Solve for x
    x = 52,523,260,071.03/260,604.42
  6. Step 6: Final answer
    x = 201,544.01

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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.