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Finding the Fourth Proportional to 354,955.44, 489,848.60 and 193,820.72

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Solution

The fourth proportional to 354,955.44, 489,848.60 and 193,820.72 is: 267,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,955.44 : 489,848.60 = 193,820.72 : x
  2. Step 2: Convert to fraction form
    354,955.44/489,848.60 = 193,820.72/x
  3. Step 3: Cross multiply
    354,955.44x = 489,848.60 × 193,820.72
  4. Step 4: Simplify right side
    354,955.44x = 94,942,808,342.99
  5. Step 5: Solve for x
    x = 94,942,808,342.99/354,955.44
  6. Step 6: Final answer
    x = 267,478.10

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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.