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Finding the Fourth Proportional to 340,974.71, 511,482.55 and 104,319.44

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Solution

The fourth proportional to 340,974.71, 511,482.55 and 104,319.44 is: 156,485.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,974.71 : 511,482.55 = 104,319.44 : x
  2. Step 2: Convert to fraction form
    340,974.71/511,482.55 = 104,319.44/x
  3. Step 3: Cross multiply
    340,974.71x = 511,482.55 × 104,319.44
  4. Step 4: Simplify right side
    340,974.71x = 53,357,574,203.68
  5. Step 5: Solve for x
    x = 53,357,574,203.68/340,974.71
  6. Step 6: Final answer
    x = 156,485.43

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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.