Home / 258,184.32-387,428-108,413.04

Finding the Fourth Proportional to 258,184.32, 387,428 and 108,413.04

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Solution

The fourth proportional to 258,184.32, 387,428 and 108,413.04 is: 162,683.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,184.32 : 387,428 = 108,413.04 : x
  2. Step 2: Convert to fraction form
    258,184.32/387,428 = 108,413.04/x
  3. Step 3: Cross multiply
    258,184.32x = 387,428 × 108,413.04
  4. Step 4: Simplify right side
    258,184.32x = 42,002,247,261.12
  5. Step 5: Solve for x
    x = 42,002,247,261.12/258,184.32
  6. Step 6: Final answer
    x = 162,683.18

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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.