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Finding the Fourth Proportional to 395,685.38, 546,128.26 and 363,803.78

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Solution

The fourth proportional to 395,685.38, 546,128.26 and 363,803.78 is: 502,125.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,685.38 : 546,128.26 = 363,803.78 : x
  2. Step 2: Convert to fraction form
    395,685.38/546,128.26 = 363,803.78/x
  3. Step 3: Cross multiply
    395,685.38x = 546,128.26 × 363,803.78
  4. Step 4: Simplify right side
    395,685.38x = 198,683,525,352.82
  5. Step 5: Solve for x
    x = 198,683,525,352.82/395,685.38
  6. Step 6: Final answer
    x = 502,125.01

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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.