Home / 395,721.60-546,343.43-304,905.21

Finding the Fourth Proportional to 395,721.60, 546,343.43 and 304,905.21

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Solution

The fourth proportional to 395,721.60, 546,343.43 and 304,905.21 is: 420,959.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,721.60 : 546,343.43 = 304,905.21 : x
  2. Step 2: Convert to fraction form
    395,721.60/546,343.43 = 304,905.21/x
  3. Step 3: Cross multiply
    395,721.60x = 546,343.43 × 304,905.21
  4. Step 4: Simplify right side
    395,721.60x = 166,582,956,731.74
  5. Step 5: Solve for x
    x = 166,582,956,731.74/395,721.60
  6. Step 6: Final answer
    x = 420,959.98

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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.