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Finding the Fourth Proportional to 307,737.80, 461,145.90 and 260,736.20

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Solution

The fourth proportional to 307,737.80, 461,145.90 and 260,736.20 is: 390,713.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,737.80 : 461,145.90 = 260,736.20 : x
  2. Step 2: Convert to fraction form
    307,737.80/461,145.90 = 260,736.20/x
  3. Step 3: Cross multiply
    307,737.80x = 461,145.90 × 260,736.20
  4. Step 4: Simplify right side
    307,737.80x = 120,237,429,611.58
  5. Step 5: Solve for x
    x = 120,237,429,611.58/307,737.80
  6. Step 6: Final answer
    x = 390,713.88

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1.5x scale

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.