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Finding the Fourth Proportional to 279,275.40, 385,428.60 and 164,589.72

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Solution

The fourth proportional to 279,275.40, 385,428.60 and 164,589.72 is: 227,150.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,275.40 : 385,428.60 = 164,589.72 : x
  2. Step 2: Convert to fraction form
    279,275.40/385,428.60 = 164,589.72/x
  3. Step 3: Cross multiply
    279,275.40x = 385,428.60 × 164,589.72
  4. Step 4: Simplify right side
    279,275.40x = 63,437,585,353.99
  5. Step 5: Solve for x
    x = 63,437,585,353.99/279,275.40
  6. Step 6: Final answer
    x = 227,150.64

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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.