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Finding the Fourth Proportional to 307,956.40, 461,734.80 and 130,415.20

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Solution

The fourth proportional to 307,956.40, 461,734.80 and 130,415.20 is: 195,538.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,956.40 : 461,734.80 = 130,415.20 : x
  2. Step 2: Convert to fraction form
    307,956.40/461,734.80 = 130,415.20/x
  3. Step 3: Cross multiply
    307,956.40x = 461,734.80 × 130,415.20
  4. Step 4: Simplify right side
    307,956.40x = 60,217,236,288.96
  5. Step 5: Solve for x
    x = 60,217,236,288.96/307,956.40
  6. Step 6: Final answer
    x = 195,538.19

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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.