Home / 210,413.40-315,432.18-77,262.72

Finding the Fourth Proportional to 210,413.40, 315,432.18 and 77,262.72

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Solution

The fourth proportional to 210,413.40, 315,432.18 and 77,262.72 is: 115,825.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,413.40 : 315,432.18 = 77,262.72 : x
  2. Step 2: Convert to fraction form
    210,413.40/315,432.18 = 77,262.72/x
  3. Step 3: Cross multiply
    210,413.40x = 315,432.18 × 77,262.72
  4. Step 4: Simplify right side
    210,413.40x = 24,371,148,202.33
  5. Step 5: Solve for x
    x = 24,371,148,202.33/210,413.40
  6. Step 6: Final answer
    x = 115,825.08

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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.