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Finding the Fourth Proportional to 395,782.88, 593,680.80 and 115,315.52

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Solution

The fourth proportional to 395,782.88, 593,680.80 and 115,315.52 is: 172,975.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,782.88 : 593,680.80 = 115,315.52 : x
  2. Step 2: Convert to fraction form
    395,782.88/593,680.80 = 115,315.52/x
  3. Step 3: Cross multiply
    395,782.88x = 593,680.80 × 115,315.52
  4. Step 4: Simplify right side
    395,782.88x = 68,460,610,166.02
  5. Step 5: Solve for x
    x = 68,460,610,166.02/395,782.88
  6. Step 6: Final answer
    x = 172,975.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.