Home / 217,479.18-300,139.38-120,692.16

Finding the Fourth Proportional to 217,479.18, 300,139.38 and 120,692.16

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Solution

The fourth proportional to 217,479.18, 300,139.38 and 120,692.16 is: 166,565.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,479.18 : 300,139.38 = 120,692.16 : x
  2. Step 2: Convert to fraction form
    217,479.18/300,139.38 = 120,692.16/x
  3. Step 3: Cross multiply
    217,479.18x = 300,139.38 × 120,692.16
  4. Step 4: Simplify right side
    217,479.18x = 36,224,470,073.26
  5. Step 5: Solve for x
    x = 36,224,470,073.26/217,479.18
  6. Step 6: Final answer
    x = 166,565.23

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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.