Home / 212,576.13-318,909.17-70,413.35

Finding the Fourth Proportional to 212,576.13, 318,909.17 and 70,413.35

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Solution

The fourth proportional to 212,576.13, 318,909.17 and 70,413.35 is: 105,634.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,576.13 : 318,909.17 = 70,413.35 : x
  2. Step 2: Convert to fraction form
    212,576.13/318,909.17 = 70,413.35/x
  3. Step 3: Cross multiply
    212,576.13x = 318,909.17 × 70,413.35
  4. Step 4: Simplify right side
    212,576.13x = 22,455,463,978.73
  5. Step 5: Solve for x
    x = 22,455,463,978.73/212,576.13
  6. Step 6: Final answer
    x = 105,634.93

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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.