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Finding the Fourth Proportional to 219,792.75, 329,715.57 and 77,608.77

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Solution

The fourth proportional to 219,792.75, 329,715.57 and 77,608.77 is: 116,422.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,792.75 : 329,715.57 = 77,608.77 : x
  2. Step 2: Convert to fraction form
    219,792.75/329,715.57 = 77,608.77/x
  3. Step 3: Cross multiply
    219,792.75x = 329,715.57 × 77,608.77
  4. Step 4: Simplify right side
    219,792.75x = 25,588,819,837.55
  5. Step 5: Solve for x
    x = 25,588,819,837.55/219,792.75
  6. Step 6: Final answer
    x = 116,422.49

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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.