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Finding the Fourth Proportional to 507,987.68, 761,986.13 and 219,745.52

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Solution

The fourth proportional to 507,987.68, 761,986.13 and 219,745.52 is: 329,620.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,987.68 : 761,986.13 = 219,745.52 : x
  2. Step 2: Convert to fraction form
    507,987.68/761,986.13 = 219,745.52/x
  3. Step 3: Cross multiply
    507,987.68x = 761,986.13 × 219,745.52
  4. Step 4: Simplify right side
    507,987.68x = 167,443,038,369.64
  5. Step 5: Solve for x
    x = 167,443,038,369.64/507,987.68
  6. Step 6: Final answer
    x = 329,620.27

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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.