Home / 354,721.08-489,598.86-203,905.56

Finding the Fourth Proportional to 354,721.08, 489,598.86 and 203,905.56

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Solution

The fourth proportional to 354,721.08, 489,598.86 and 203,905.56 is: 281,437.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,721.08 : 489,598.86 = 203,905.56 : x
  2. Step 2: Convert to fraction form
    354,721.08/489,598.86 = 203,905.56/x
  3. Step 3: Cross multiply
    354,721.08x = 489,598.86 × 203,905.56
  4. Step 4: Simplify right side
    354,721.08x = 99,831,929,723.66
  5. Step 5: Solve for x
    x = 99,831,929,723.66/354,721.08
  6. Step 6: Final answer
    x = 281,437.83

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1.5x scale

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.