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Finding the Fourth Proportional to 330,840.34, 456,413.25 and 203,440.66

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Solution

The fourth proportional to 330,840.34, 456,413.25 and 203,440.66 is: 280,658.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,840.34 : 456,413.25 = 203,440.66 : x
  2. Step 2: Convert to fraction form
    330,840.34/456,413.25 = 203,440.66/x
  3. Step 3: Cross multiply
    330,840.34x = 456,413.25 × 203,440.66
  4. Step 4: Simplify right side
    330,840.34x = 92,853,012,812.75
  5. Step 5: Solve for x
    x = 92,853,012,812.75/330,840.34
  6. Step 6: Final answer
    x = 280,658.07

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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.