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Finding the Fourth Proportional to 223,294.79, 308,128.94 and 127,779.59

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Solution

The fourth proportional to 223,294.79, 308,128.94 and 127,779.59 is: 176,325.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,294.79 : 308,128.94 = 127,779.59 : x
  2. Step 2: Convert to fraction form
    223,294.79/308,128.94 = 127,779.59/x
  3. Step 3: Cross multiply
    223,294.79x = 308,128.94 × 127,779.59
  4. Step 4: Simplify right side
    223,294.79x = 39,372,588,981.44
  5. Step 5: Solve for x
    x = 39,372,588,981.44/223,294.79
  6. Step 6: Final answer
    x = 176,325.61

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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.