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Finding the Fourth Proportional to 256,825.32, 385,142.19 and 88,297.93

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Solution

The fourth proportional to 256,825.32, 385,142.19 and 88,297.93 is: 132,413.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,825.32 : 385,142.19 = 88,297.93 : x
  2. Step 2: Convert to fraction form
    256,825.32/385,142.19 = 88,297.93/x
  3. Step 3: Cross multiply
    256,825.32x = 385,142.19 × 88,297.93
  4. Step 4: Simplify right side
    256,825.32x = 34,007,258,132.67
  5. Step 5: Solve for x
    x = 34,007,258,132.67/256,825.32
  6. Step 6: Final answer
    x = 132,413.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.