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Finding the Fourth Proportional to 238,355.90, 328,941.48 and 136,413.36

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Solution

The fourth proportional to 238,355.90, 328,941.48 and 136,413.36 is: 188,256.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,355.90 : 328,941.48 = 136,413.36 : x
  2. Step 2: Convert to fraction form
    238,355.90/328,941.48 = 136,413.36/x
  3. Step 3: Cross multiply
    238,355.90x = 328,941.48 × 136,413.36
  4. Step 4: Simplify right side
    238,355.90x = 44,872,012,530.17
  5. Step 5: Solve for x
    x = 44,872,012,530.17/238,355.90
  6. Step 6: Final answer
    x = 188,256.35

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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.