Home / 401,450.24-553,971.20-220,133.12

Finding the Fourth Proportional to 401,450.24, 553,971.20 and 220,133.12

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Solution

The fourth proportional to 401,450.24, 553,971.20 and 220,133.12 is: 303,767.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,450.24 : 553,971.20 = 220,133.12 : x
  2. Step 2: Convert to fraction form
    401,450.24/553,971.20 = 220,133.12/x
  3. Step 3: Cross multiply
    401,450.24x = 553,971.20 × 220,133.12
  4. Step 4: Simplify right side
    401,450.24x = 121,947,408,646.14
  5. Step 5: Solve for x
    x = 121,947,408,646.14/401,450.24
  6. Step 6: Final answer
    x = 303,767.18

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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.