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Finding the Fourth Proportional to 401,503.79, 554,090.74 and 220,223.36

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Solution

The fourth proportional to 401,503.79, 554,090.74 and 220,223.36 is: 303,916.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,503.79 : 554,090.74 = 220,223.36 : x
  2. Step 2: Convert to fraction form
    401,503.79/554,090.74 = 220,223.36/x
  3. Step 3: Cross multiply
    401,503.79x = 554,090.74 × 220,223.36
  4. Step 4: Simplify right side
    401,503.79x = 122,023,725,342.36
  5. Step 5: Solve for x
    x = 122,023,725,342.36/401,503.79
  6. Step 6: Final answer
    x = 303,916.74

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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.