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Finding the Fourth Proportional to 348,069.60, 521,413.20 and 190,015.20

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Solution

The fourth proportional to 348,069.60, 521,413.20 and 190,015.20 is: 284,645.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,069.60 : 521,413.20 = 190,015.20 : x
  2. Step 2: Convert to fraction form
    348,069.60/521,413.20 = 190,015.20/x
  3. Step 3: Cross multiply
    348,069.60x = 521,413.20 × 190,015.20
  4. Step 4: Simplify right side
    348,069.60x = 99,076,433,480.64
  5. Step 5: Solve for x
    x = 99,076,433,480.64/348,069.60
  6. Step 6: Final answer
    x = 284,645.47

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1.5x scale

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.