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Finding the Fourth Proportional to 402,028.01, 554,806.36 and 220,758.51

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Solution

The fourth proportional to 402,028.01, 554,806.36 and 220,758.51 is: 304,650.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,028.01 : 554,806.36 = 220,758.51 : x
  2. Step 2: Convert to fraction form
    402,028.01/554,806.36 = 220,758.51/x
  3. Step 3: Cross multiply
    402,028.01x = 554,806.36 × 220,758.51
  4. Step 4: Simplify right side
    402,028.01x = 122,478,227,728.60
  5. Step 5: Solve for x
    x = 122,478,227,728.60/402,028.01
  6. Step 6: Final answer
    x = 304,650.98

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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.