Home / 280,696.85-387,361.74-151,635.36

Finding the Fourth Proportional to 280,696.85, 387,361.74 and 151,635.36

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Solution

The fourth proportional to 280,696.85, 387,361.74 and 151,635.36 is: 209,256.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,696.85 : 387,361.74 = 151,635.36 : x
  2. Step 2: Convert to fraction form
    280,696.85/387,361.74 = 151,635.36/x
  3. Step 3: Cross multiply
    280,696.85x = 387,361.74 × 151,635.36
  4. Step 4: Simplify right side
    280,696.85x = 58,737,736,895.13
  5. Step 5: Solve for x
    x = 58,737,736,895.13/280,696.85
  6. Step 6: Final answer
    x = 209,256.84

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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.