Home / 280,787.52-387,484.56-158,268.72

Finding the Fourth Proportional to 280,787.52, 387,484.56 and 158,268.72

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Solution

The fourth proportional to 280,787.52, 387,484.56 and 158,268.72 is: 218,409.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,787.52 : 387,484.56 = 158,268.72 : x
  2. Step 2: Convert to fraction form
    280,787.52/387,484.56 = 158,268.72/x
  3. Step 3: Cross multiply
    280,787.52x = 387,484.56 × 158,268.72
  4. Step 4: Simplify right side
    280,787.52x = 61,326,685,330.96
  5. Step 5: Solve for x
    x = 61,326,685,330.96/280,787.52
  6. Step 6: Final answer
    x = 218,409.58

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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.