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Finding the Fourth Proportional to 511,999.16, 768,341.58 and 212,480.03

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Solution

The fourth proportional to 511,999.16, 768,341.58 and 212,480.03 is: 318,862.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,999.16 : 768,341.58 = 212,480.03 : x
  2. Step 2: Convert to fraction form
    511,999.16/768,341.58 = 212,480.03/x
  3. Step 3: Cross multiply
    511,999.16x = 768,341.58 × 212,480.03
  4. Step 4: Simplify right side
    511,999.16x = 163,257,237,064.54
  5. Step 5: Solve for x
    x = 163,257,237,064.54/511,999.16
  6. Step 6: Final answer
    x = 318,862.31

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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.