Home / 212,413.05-318,666.45-70,302.60

Finding the Fourth Proportional to 212,413.05, 318,666.45 and 70,302.60

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Solution

The fourth proportional to 212,413.05, 318,666.45 and 70,302.60 is: 105,469.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,413.05 : 318,666.45 = 70,302.60 : x
  2. Step 2: Convert to fraction form
    212,413.05/318,666.45 = 70,302.60/x
  3. Step 3: Cross multiply
    212,413.05x = 318,666.45 × 70,302.60
  4. Step 4: Simplify right side
    212,413.05x = 22,403,080,231.40
  5. Step 5: Solve for x
    x = 22,403,080,231.40/212,413.05
  6. Step 6: Final answer
    x = 105,469.42

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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.