Home / 216,741.28-299,118.72-121,278.73

Finding the Fourth Proportional to 216,741.28, 299,118.72 and 121,278.73

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Solution

The fourth proportional to 216,741.28, 299,118.72 and 121,278.73 is: 167,373.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,741.28 : 299,118.72 = 121,278.73 : x
  2. Step 2: Convert to fraction form
    216,741.28/299,118.72 = 121,278.73/x
  3. Step 3: Cross multiply
    216,741.28x = 299,118.72 × 121,278.73
  4. Step 4: Simplify right side
    216,741.28x = 36,276,738,480.83
  5. Step 5: Solve for x
    x = 36,276,738,480.83/216,741.28
  6. Step 6: Final answer
    x = 167,373.46

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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.