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Finding the Fourth Proportional to 223,779.48, 308,822.40 and 137,788.09

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Solution

The fourth proportional to 223,779.48, 308,822.40 and 137,788.09 is: 190,151.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,779.48 : 308,822.40 = 137,788.09 : x
  2. Step 2: Convert to fraction form
    223,779.48/308,822.40 = 137,788.09/x
  3. Step 3: Cross multiply
    223,779.48x = 308,822.40 × 137,788.09
  4. Step 4: Simplify right side
    223,779.48x = 42,552,047,485.63
  5. Step 5: Solve for x
    x = 42,552,047,485.63/223,779.48
  6. Step 6: Final answer
    x = 190,151.69

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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.