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Finding the Fourth Proportional to 252,054.40, 378,081.60 and 127,379.20

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Solution

The fourth proportional to 252,054.40, 378,081.60 and 127,379.20 is: 191,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,054.40 : 378,081.60 = 127,379.20 : x
  2. Step 2: Convert to fraction form
    252,054.40/378,081.60 = 127,379.20/x
  3. Step 3: Cross multiply
    252,054.40x = 378,081.60 × 127,379.20
  4. Step 4: Simplify right side
    252,054.40x = 48,159,731,742.72
  5. Step 5: Solve for x
    x = 48,159,731,742.72/252,054.40
  6. Step 6: Final answer
    x = 191,068.80

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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.