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Finding the Fourth Proportional to 620,413.30, 930,684.68 and 171,134.24

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Solution

The fourth proportional to 620,413.30, 930,684.68 and 171,134.24 is: 256,719.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,413.30 : 930,684.68 = 171,134.24 : x
  2. Step 2: Convert to fraction form
    620,413.30/930,684.68 = 171,134.24/x
  3. Step 3: Cross multiply
    620,413.30x = 930,684.68 × 171,134.24
  4. Step 4: Simplify right side
    620,413.30x = 159,272,015,391.44
  5. Step 5: Solve for x
    x = 159,272,015,391.44/620,413.30
  6. Step 6: Final answer
    x = 256,719.22

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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.