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Finding the Fourth Proportional to 245,692, 339,056.32 and 138,263.84

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Solution

The fourth proportional to 245,692, 339,056.32 and 138,263.84 is: 190,804.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,692 : 339,056.32 = 138,263.84 : x
  2. Step 2: Convert to fraction form
    245,692/339,056.32 = 138,263.84/x
  3. Step 3: Cross multiply
    245,692x = 339,056.32 × 138,263.84
  4. Step 4: Simplify right side
    245,692x = 46,879,228,779.47
  5. Step 5: Solve for x
    x = 46,879,228,779.47/245,692
  6. Step 6: Final answer
    x = 190,804.86

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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.