Home / 279,639.56-385,913.51-158,792.18

Finding the Fourth Proportional to 279,639.56, 385,913.51 and 158,792.18

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Solution

The fourth proportional to 279,639.56, 385,913.51 and 158,792.18 is: 219,139.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,639.56 : 385,913.51 = 158,792.18 : x
  2. Step 2: Convert to fraction form
    279,639.56/385,913.51 = 158,792.18/x
  3. Step 3: Cross multiply
    279,639.56x = 385,913.51 × 158,792.18
  4. Step 4: Simplify right side
    279,639.56x = 61,280,048,906.12
  5. Step 5: Solve for x
    x = 61,280,048,906.12/279,639.56
  6. Step 6: Final answer
    x = 219,139.42

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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.