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Finding the Fourth Proportional to 354,474.02, 489,253.56 and 225,387.56

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Solution

The fourth proportional to 354,474.02, 489,253.56 and 225,387.56 is: 311,085.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,474.02 : 489,253.56 = 225,387.56 : x
  2. Step 2: Convert to fraction form
    354,474.02/489,253.56 = 225,387.56/x
  3. Step 3: Cross multiply
    354,474.02x = 489,253.56 × 225,387.56
  4. Step 4: Simplify right side
    354,474.02x = 110,271,666,109.71
  5. Step 5: Solve for x
    x = 110,271,666,109.71/354,474.02
  6. Step 6: Final answer
    x = 311,085.33

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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.