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Finding the Fourth Proportional to 395,353.65, 545,566.44 and 231,988.16

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Solution

The fourth proportional to 395,353.65, 545,566.44 and 231,988.16 is: 320,130.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,353.65 : 545,566.44 = 231,988.16 : x
  2. Step 2: Convert to fraction form
    395,353.65/545,566.44 = 231,988.16/x
  3. Step 3: Cross multiply
    395,353.65x = 545,566.44 × 231,988.16
  4. Step 4: Simplify right side
    395,353.65x = 126,564,952,715.47
  5. Step 5: Solve for x
    x = 126,564,952,715.47/395,353.65
  6. Step 6: Final answer
    x = 320,130.99

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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.