Home / 212,005.80-317,811.06-71,666.28

Finding the Fourth Proportional to 212,005.80, 317,811.06 and 71,666.28

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Solution

The fourth proportional to 212,005.80, 317,811.06 and 71,666.28 is: 107,432.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,005.80 : 317,811.06 = 71,666.28 : x
  2. Step 2: Convert to fraction form
    212,005.80/317,811.06 = 71,666.28/x
  3. Step 3: Cross multiply
    212,005.80x = 317,811.06 × 71,666.28
  4. Step 4: Simplify right side
    212,005.80x = 22,776,336,413.06
  5. Step 5: Solve for x
    x = 22,776,336,413.06/212,005.80
  6. Step 6: Final answer
    x = 107,432.61

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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.