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Finding the Fourth Proportional to 421,269.36, 580,975.32 and 349,535.76

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Solution

The fourth proportional to 421,269.36, 580,975.32 and 349,535.76 is: 482,047.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,269.36 : 580,975.32 = 349,535.76 : x
  2. Step 2: Convert to fraction form
    421,269.36/580,975.32 = 349,535.76/x
  3. Step 3: Cross multiply
    421,269.36x = 580,975.32 × 349,535.76
  4. Step 4: Simplify right side
    421,269.36x = 203,071,650,017.44
  5. Step 5: Solve for x
    x = 203,071,650,017.44/421,269.36
  6. Step 6: Final answer
    x = 482,047.04

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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.