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Finding the Fourth Proportional to 315,393.03, 472,907.75 and 215,674.03

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Solution

The fourth proportional to 315,393.03, 472,907.75 and 215,674.03 is: 323,386.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,393.03 : 472,907.75 = 215,674.03 : x
  2. Step 2: Convert to fraction form
    315,393.03/472,907.75 = 215,674.03/x
  3. Step 3: Cross multiply
    315,393.03x = 472,907.75 × 215,674.03
  4. Step 4: Simplify right side
    315,393.03x = 101,993,920,260.73
  5. Step 5: Solve for x
    x = 101,993,920,260.73/315,393.03
  6. Step 6: Final answer
    x = 323,386.73

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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.