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Finding the Fourth Proportional to 379,920.40, 569,880.60 and 158,275.60

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Solution

The fourth proportional to 379,920.40, 569,880.60 and 158,275.60 is: 237,413.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,920.40 : 569,880.60 = 158,275.60 : x
  2. Step 2: Convert to fraction form
    379,920.40/569,880.60 = 158,275.60/x
  3. Step 3: Cross multiply
    379,920.40x = 569,880.60 × 158,275.60
  4. Step 4: Simplify right side
    379,920.40x = 90,198,193,893.36
  5. Step 5: Solve for x
    x = 90,198,193,893.36/379,920.40
  6. Step 6: Final answer
    x = 237,413.40

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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.