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Finding the Fourth Proportional to 379,782.60, 524,164.43 and 218,730.89

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Solution

The fourth proportional to 379,782.60, 524,164.43 and 218,730.89 is: 301,885.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,782.60 : 524,164.43 = 218,730.89 : x
  2. Step 2: Convert to fraction form
    379,782.60/524,164.43 = 218,730.89/x
  3. Step 3: Cross multiply
    379,782.60x = 524,164.43 × 218,730.89
  4. Step 4: Simplify right side
    379,782.60x = 114,650,952,171.86
  5. Step 5: Solve for x
    x = 114,650,952,171.86/379,782.60
  6. Step 6: Final answer
    x = 301,885.74

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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.