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Finding the Fourth Proportional to 354,798.15, 489,621.28 and 193,653.18

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Solution

The fourth proportional to 354,798.15, 489,621.28 and 193,653.18 is: 267,241.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,798.15 : 489,621.28 = 193,653.18 : x
  2. Step 2: Convert to fraction form
    354,798.15/489,621.28 = 193,653.18/x
  3. Step 3: Cross multiply
    354,798.15x = 489,621.28 × 193,653.18
  4. Step 4: Simplify right side
    354,798.15x = 94,816,717,867.67
  5. Step 5: Solve for x
    x = 94,816,717,867.67/354,798.15
  6. Step 6: Final answer
    x = 267,241.30

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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.