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Finding the Fourth Proportional to 340,738.60, 511,302.30 and 130,527.40

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Solution

The fourth proportional to 340,738.60, 511,302.30 and 130,527.40 is: 195,865.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,738.60 : 511,302.30 = 130,527.40 : x
  2. Step 2: Convert to fraction form
    340,738.60/511,302.30 = 130,527.40/x
  3. Step 3: Cross multiply
    340,738.60x = 511,302.30 × 130,527.40
  4. Step 4: Simplify right side
    340,738.60x = 66,738,959,833.02
  5. Step 5: Solve for x
    x = 66,738,959,833.02/340,738.60
  6. Step 6: Final answer
    x = 195,865.57

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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.