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Finding the Fourth Proportional to 340,898.63, 511,421.75 and 130,536.56

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Solution

The fourth proportional to 340,898.63, 511,421.75 and 130,536.56 is: 195,833.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,898.63 : 511,421.75 = 130,536.56 : x
  2. Step 2: Convert to fraction form
    340,898.63/511,421.75 = 130,536.56/x
  3. Step 3: Cross multiply
    340,898.63x = 511,421.75 × 130,536.56
  4. Step 4: Simplify right side
    340,898.63x = 66,759,237,069.56
  5. Step 5: Solve for x
    x = 66,759,237,069.56/340,898.63
  6. Step 6: Final answer
    x = 195,833.11

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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.