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Finding the Fourth Proportional to 401,555.88, 554,152.32 and 220,256.01

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Solution

The fourth proportional to 401,555.88, 554,152.32 and 220,256.01 is: 303,956.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,555.88 : 554,152.32 = 220,256.01 : x
  2. Step 2: Convert to fraction form
    401,555.88/554,152.32 = 220,256.01/x
  3. Step 3: Cross multiply
    401,555.88x = 554,152.32 × 220,256.01
  4. Step 4: Simplify right side
    401,555.88x = 122,055,378,935.44
  5. Step 5: Solve for x
    x = 122,055,378,935.44/401,555.88
  6. Step 6: Final answer
    x = 303,956.15

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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.