Home / 217,436.85-300,065.28-120,642.45

Finding the Fourth Proportional to 217,436.85, 300,065.28 and 120,642.45

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Solution

The fourth proportional to 217,436.85, 300,065.28 and 120,642.45 is: 166,487.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,436.85 : 300,065.28 = 120,642.45 : x
  2. Step 2: Convert to fraction form
    217,436.85/300,065.28 = 120,642.45/x
  3. Step 3: Cross multiply
    217,436.85x = 300,065.28 × 120,642.45
  4. Step 4: Simplify right side
    217,436.85x = 36,200,610,539.14
  5. Step 5: Solve for x
    x = 36,200,610,539.14/217,436.85
  6. Step 6: Final answer
    x = 166,487.93

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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.