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Finding the Fourth Proportional to 401,533.64, 554,106.82 and 220,243.94

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Solution

The fourth proportional to 401,533.64, 554,106.82 and 220,243.94 is: 303,931.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,533.64 : 554,106.82 = 220,243.94 : x
  2. Step 2: Convert to fraction form
    401,533.64/554,106.82 = 220,243.94/x
  3. Step 3: Cross multiply
    401,533.64x = 554,106.82 × 220,243.94
  4. Step 4: Simplify right side
    401,533.64x = 122,038,669,217.67
  5. Step 5: Solve for x
    x = 122,038,669,217.67/401,533.64
  6. Step 6: Final answer
    x = 303,931.37

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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.