Home / 420,397.26-580,165.64-239,141.13

Finding the Fourth Proportional to 420,397.26, 580,165.64 and 239,141.13

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Solution

The fourth proportional to 420,397.26, 580,165.64 and 239,141.13 is: 330,024.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,397.26 : 580,165.64 = 239,141.13 : x
  2. Step 2: Convert to fraction form
    420,397.26/580,165.64 = 239,141.13/x
  3. Step 3: Cross multiply
    420,397.26x = 580,165.64 × 239,141.13
  4. Step 4: Simplify right side
    420,397.26x = 138,741,466,736.77
  5. Step 5: Solve for x
    x = 138,741,466,736.77/420,397.26
  6. Step 6: Final answer
    x = 330,024.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.