Home / 379,454.56-523,626.69-209,677.75

Finding the Fourth Proportional to 379,454.56, 523,626.69 and 209,677.75

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Solution

The fourth proportional to 379,454.56, 523,626.69 and 209,677.75 is: 289,343.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,454.56 : 523,626.69 = 209,677.75 : x
  2. Step 2: Convert to fraction form
    379,454.56/523,626.69 = 209,677.75/x
  3. Step 3: Cross multiply
    379,454.56x = 523,626.69 × 209,677.75
  4. Step 4: Simplify right side
    379,454.56x = 109,792,866,199.15
  5. Step 5: Solve for x
    x = 109,792,866,199.15/379,454.56
  6. Step 6: Final answer
    x = 289,343.91

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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.