Home / 312,623.58-431,419.95-169,387.50

Finding the Fourth Proportional to 312,623.58, 431,419.95 and 169,387.50

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Solution

The fourth proportional to 312,623.58, 431,419.95 and 169,387.50 is: 233,754.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,623.58 : 431,419.95 = 169,387.50 : x
  2. Step 2: Convert to fraction form
    312,623.58/431,419.95 = 169,387.50/x
  3. Step 3: Cross multiply
    312,623.58x = 431,419.95 × 169,387.50
  4. Step 4: Simplify right side
    312,623.58x = 73,077,146,780.63
  5. Step 5: Solve for x
    x = 73,077,146,780.63/312,623.58
  6. Step 6: Final answer
    x = 233,754.43

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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.