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Finding the Fourth Proportional to 258,413.32, 387,114.52 and 169,395.16

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Solution

The fourth proportional to 258,413.32, 387,114.52 and 169,395.16 is: 253,761.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,413.32 : 387,114.52 = 169,395.16 : x
  2. Step 2: Convert to fraction form
    258,413.32/387,114.52 = 169,395.16/x
  3. Step 3: Cross multiply
    258,413.32x = 387,114.52 × 169,395.16
  4. Step 4: Simplify right side
    258,413.32x = 65,575,326,053.72
  5. Step 5: Solve for x
    x = 65,575,326,053.72/258,413.32
  6. Step 6: Final answer
    x = 253,761.40

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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.