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Finding the Fourth Proportional to 403,719.68, 605,126.90 and 163,777.84

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Solution

The fourth proportional to 403,719.68, 605,126.90 and 163,777.84 is: 245,483.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,719.68 : 605,126.90 = 163,777.84 : x
  2. Step 2: Convert to fraction form
    403,719.68/605,126.90 = 163,777.84/x
  3. Step 3: Cross multiply
    403,719.68x = 605,126.90 × 163,777.84
  4. Step 4: Simplify right side
    403,719.68x = 99,106,375,504.52
  5. Step 5: Solve for x
    x = 99,106,375,504.52/403,719.68
  6. Step 6: Final answer
    x = 245,483.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.