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Finding the Fourth Proportional to 307,445.70, 461,233.35 and 129,861.30

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Solution

The fourth proportional to 307,445.70, 461,233.35 and 129,861.30 is: 194,819.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,445.70 : 461,233.35 = 129,861.30 : x
  2. Step 2: Convert to fraction form
    307,445.70/461,233.35 = 129,861.30/x
  3. Step 3: Cross multiply
    307,445.70x = 461,233.35 × 129,861.30
  4. Step 4: Simplify right side
    307,445.70x = 59,896,362,434.36
  5. Step 5: Solve for x
    x = 59,896,362,434.36/307,445.70
  6. Step 6: Final answer
    x = 194,819.32

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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.