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Finding the Fourth Proportional to 354,970.27, 489,878.85 and 193,840.30

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Solution

The fourth proportional to 354,970.27, 489,878.85 and 193,840.30 is: 267,510.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,970.27 : 489,878.85 = 193,840.30 : x
  2. Step 2: Convert to fraction form
    354,970.27/489,878.85 = 193,840.30/x
  3. Step 3: Cross multiply
    354,970.27x = 489,878.85 × 193,840.30
  4. Step 4: Simplify right side
    354,970.27x = 94,958,263,247.66
  5. Step 5: Solve for x
    x = 94,958,263,247.66/354,970.27
  6. Step 6: Final answer
    x = 267,510.47

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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.