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Finding the Fourth Proportional to 401,509.19, 554,085.41 and 220,222.39

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Solution

The fourth proportional to 401,509.19, 554,085.41 and 220,222.39 is: 303,908.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,509.19 : 554,085.41 = 220,222.39 : x
  2. Step 2: Convert to fraction form
    401,509.19/554,085.41 = 220,222.39/x
  3. Step 3: Cross multiply
    401,509.19x = 554,085.41 × 220,222.39
  4. Step 4: Simplify right side
    401,509.19x = 122,022,009,382.79
  5. Step 5: Solve for x
    x = 122,022,009,382.79/401,509.19
  6. Step 6: Final answer
    x = 303,908.38

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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.