Home / 345,485.34-518,297.67-145,805.94

Finding the Fourth Proportional to 345,485.34, 518,297.67 and 145,805.94

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Solution

The fourth proportional to 345,485.34, 518,297.67 and 145,805.94 is: 218,738.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,485.34 : 518,297.67 = 145,805.94 : x
  2. Step 2: Convert to fraction form
    345,485.34/518,297.67 = 145,805.94/x
  3. Step 3: Cross multiply
    345,485.34x = 518,297.67 × 145,805.94
  4. Step 4: Simplify right side
    345,485.34x = 75,570,878,974.16
  5. Step 5: Solve for x
    x = 75,570,878,974.16/345,485.34
  6. Step 6: Final answer
    x = 218,738.31

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1.5x scale

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.