Home / 280,686.26-387,347.38-153,361.85

Finding the Fourth Proportional to 280,686.26, 387,347.38 and 153,361.85

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Solution

The fourth proportional to 280,686.26, 387,347.38 and 153,361.85 is: 211,639.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,686.26 : 387,347.38 = 153,361.85 : x
  2. Step 2: Convert to fraction form
    280,686.26/387,347.38 = 153,361.85/x
  3. Step 3: Cross multiply
    280,686.26x = 387,347.38 × 153,361.85
  4. Step 4: Simplify right side
    280,686.26x = 59,404,311,374.42
  5. Step 5: Solve for x
    x = 59,404,311,374.42/280,686.26
  6. Step 6: Final answer
    x = 211,639.54

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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.