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Finding the Fourth Proportional to 340,921.70, 511,300.52 and 104,266.43

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Solution

The fourth proportional to 340,921.70, 511,300.52 and 104,266.43 is: 156,374.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,921.70 : 511,300.52 = 104,266.43 : x
  2. Step 2: Convert to fraction form
    340,921.70/511,300.52 = 104,266.43/x
  3. Step 3: Cross multiply
    340,921.70x = 511,300.52 × 104,266.43
  4. Step 4: Simplify right side
    340,921.70x = 53,311,477,581.71
  5. Step 5: Solve for x
    x = 53,311,477,581.71/340,921.70
  6. Step 6: Final answer
    x = 156,374.55

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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.