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Finding the Fourth Proportional to 307,737.30, 461,145.15 and 260,735.70

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Solution

The fourth proportional to 307,737.30, 461,145.15 and 260,735.70 is: 390,713.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,737.30 : 461,145.15 = 260,735.70 : x
  2. Step 2: Convert to fraction form
    307,737.30/461,145.15 = 260,735.70/x
  3. Step 3: Cross multiply
    307,737.30x = 461,145.15 × 260,735.70
  4. Step 4: Simplify right side
    307,737.30x = 120,237,003,486.86
  5. Step 5: Solve for x
    x = 120,237,003,486.86/307,737.30
  6. Step 6: Final answer
    x = 390,713.13

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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.