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Finding the Fourth Proportional to 223,295.79, 308,130.31 and 127,780.59

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Solution

The fourth proportional to 223,295.79, 308,130.31 and 127,780.59 is: 176,326.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,295.79 : 308,130.31 = 127,780.59 : x
  2. Step 2: Convert to fraction form
    223,295.79/308,130.31 = 127,780.59/x
  3. Step 3: Cross multiply
    223,295.79x = 308,130.31 × 127,780.59
  4. Step 4: Simplify right side
    223,295.79x = 39,373,072,808.68
  5. Step 5: Solve for x
    x = 39,373,072,808.68/223,295.79
  6. Step 6: Final answer
    x = 176,326.98

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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.