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Finding the Fourth Proportional to 235,792.24, 325,389.90 and 128,363.08

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Solution

The fourth proportional to 235,792.24, 325,389.90 and 128,363.08 is: 177,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,792.24 : 325,389.90 = 128,363.08 : x
  2. Step 2: Convert to fraction form
    235,792.24/325,389.90 = 128,363.08/x
  3. Step 3: Cross multiply
    235,792.24x = 325,389.90 × 128,363.08
  4. Step 4: Simplify right side
    235,792.24x = 41,768,049,764.89
  5. Step 5: Solve for x
    x = 41,768,049,764.89/235,792.24
  6. Step 6: Final answer
    x = 177,139.20

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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.