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Finding the Fourth Proportional to 392,155.71, 541,130.38 and 220,051.14

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Solution

The fourth proportional to 392,155.71, 541,130.38 and 220,051.14 is: 303,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,155.71 : 541,130.38 = 220,051.14 : x
  2. Step 2: Convert to fraction form
    392,155.71/541,130.38 = 220,051.14/x
  3. Step 3: Cross multiply
    392,155.71x = 541,130.38 × 220,051.14
  4. Step 4: Simplify right side
    392,155.71x = 119,076,357,007.63
  5. Step 5: Solve for x
    x = 119,076,357,007.63/392,155.71
  6. Step 6: Final answer
    x = 303,645.60

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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.