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Finding the Fourth Proportional to 420,447.40, 580,141.01 and 248,393.37

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Solution

The fourth proportional to 420,447.40, 580,141.01 and 248,393.37 is: 342,737.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,447.40 : 580,141.01 = 248,393.37 : x
  2. Step 2: Convert to fraction form
    420,447.40/580,141.01 = 248,393.37/x
  3. Step 3: Cross multiply
    420,447.40x = 580,141.01 × 248,393.37
  4. Step 4: Simplify right side
    420,447.40x = 144,103,180,549.10
  5. Step 5: Solve for x
    x = 144,103,180,549.10/420,447.40
  6. Step 6: Final answer
    x = 342,737.71

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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.