Home / 216,975.23-299,422.47-121,485.34

Finding the Fourth Proportional to 216,975.23, 299,422.47 and 121,485.34

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Solution

The fourth proportional to 216,975.23, 299,422.47 and 121,485.34 is: 167,647.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,975.23 : 299,422.47 = 121,485.34 : x
  2. Step 2: Convert to fraction form
    216,975.23/299,422.47 = 121,485.34/x
  3. Step 3: Cross multiply
    216,975.23x = 299,422.47 × 121,485.34
  4. Step 4: Simplify right side
    216,975.23x = 36,375,440,571.59
  5. Step 5: Solve for x
    x = 36,375,440,571.59/216,975.23
  6. Step 6: Final answer
    x = 167,647.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.