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Finding the Fourth Proportional to 271,420.45, 407,130.68 and 121,501.60

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Solution

The fourth proportional to 271,420.45, 407,130.68 and 121,501.60 is: 182,252.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,420.45 : 407,130.68 = 121,501.60 : x
  2. Step 2: Convert to fraction form
    271,420.45/407,130.68 = 121,501.60/x
  3. Step 3: Cross multiply
    271,420.45x = 407,130.68 × 121,501.60
  4. Step 4: Simplify right side
    271,420.45x = 49,467,028,421.58
  5. Step 5: Solve for x
    x = 49,467,028,421.58/271,420.45
  6. Step 6: Final answer
    x = 182,252.40

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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.