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Finding the Fourth Proportional to 255,603.66, 352,728.32 and 139,318.12

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Solution

The fourth proportional to 255,603.66, 352,728.32 and 139,318.12 is: 192,256.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,603.66 : 352,728.32 = 139,318.12 : x
  2. Step 2: Convert to fraction form
    255,603.66/352,728.32 = 139,318.12/x
  3. Step 3: Cross multiply
    255,603.66x = 352,728.32 × 139,318.12
  4. Step 4: Simplify right side
    255,603.66x = 49,141,446,413.16
  5. Step 5: Solve for x
    x = 49,141,446,413.16/255,603.66
  6. Step 6: Final answer
    x = 192,256.43

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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.