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Finding the Fourth Proportional to 330,978.88, 496,779.30 and 173,320.48

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Solution

The fourth proportional to 330,978.88, 496,779.30 and 173,320.48 is: 260,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,978.88 : 496,779.30 = 173,320.48 : x
  2. Step 2: Convert to fraction form
    330,978.88/496,779.30 = 173,320.48/x
  3. Step 3: Cross multiply
    330,978.88x = 496,779.30 × 173,320.48
  4. Step 4: Simplify right side
    330,978.88x = 86,102,026,730.06
  5. Step 5: Solve for x
    x = 86,102,026,730.06/330,978.88
  6. Step 6: Final answer
    x = 260,143.57

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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.