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Finding the Fourth Proportional to 311,413.31, 429,750.35 and 168,173.33

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Solution

The fourth proportional to 311,413.31, 429,750.35 and 168,173.33 is: 232,079.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,413.31 : 429,750.35 = 168,173.33 : x
  2. Step 2: Convert to fraction form
    311,413.31/429,750.35 = 168,173.33/x
  3. Step 3: Cross multiply
    311,413.31x = 429,750.35 × 168,173.33
  4. Step 4: Simplify right side
    311,413.31x = 72,272,548,922.97
  5. Step 5: Solve for x
    x = 72,272,548,922.97/311,413.31
  6. Step 6: Final answer
    x = 232,079.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.