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Finding the Fourth Proportional to 330,416.58, 455,992.91 and 187,204.53

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Solution

The fourth proportional to 330,416.58, 455,992.91 and 187,204.53 is: 258,352.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,416.58 : 455,992.91 = 187,204.53 : x
  2. Step 2: Convert to fraction form
    330,416.58/455,992.91 = 187,204.53/x
  3. Step 3: Cross multiply
    330,416.58x = 455,992.91 × 187,204.53
  4. Step 4: Simplify right side
    330,416.58x = 85,363,939,875.85
  5. Step 5: Solve for x
    x = 85,363,939,875.85/330,416.58
  6. Step 6: Final answer
    x = 258,352.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.