Home / 387,283.50-580,920.75-272,961.72

Finding the Fourth Proportional to 387,283.50, 580,920.75 and 272,961.72

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Solution

The fourth proportional to 387,283.50, 580,920.75 and 272,961.72 is: 409,439.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,283.50 : 580,920.75 = 272,961.72 : x
  2. Step 2: Convert to fraction form
    387,283.50/580,920.75 = 272,961.72/x
  3. Step 3: Cross multiply
    387,283.50x = 580,920.75 × 272,961.72
  4. Step 4: Simplify right side
    387,283.50x = 158,569,127,103.69
  5. Step 5: Solve for x
    x = 158,569,127,103.69/387,283.50
  6. Step 6: Final answer
    x = 409,439.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.