Home / 212,242.85-318,323.63-82,411.64

Finding the Fourth Proportional to 212,242.85, 318,323.63 and 82,411.64

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Solution

The fourth proportional to 212,242.85, 318,323.63 and 82,411.64 is: 123,601.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,242.85 : 318,323.63 = 82,411.64 : x
  2. Step 2: Convert to fraction form
    212,242.85/318,323.63 = 82,411.64/x
  3. Step 3: Cross multiply
    212,242.85x = 318,323.63 × 82,411.64
  4. Step 4: Simplify right side
    212,242.85x = 26,233,571,987.00
  5. Step 5: Solve for x
    x = 26,233,571,987.00/212,242.85
  6. Step 6: Final answer
    x = 123,601.68

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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.