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Finding the Fourth Proportional to 392,693,210.48, 541,918,273.02 and 216,477,337.88

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Solution

The fourth proportional to 392,693,210.48, 541,918,273.02 and 216,477,337.88 is: 298,739,631.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,693,210.48 : 541,918,273.02 = 216,477,337.88 : x
  2. Step 2: Convert to fraction form
    392,693,210.48/541,918,273.02 = 216,477,337.88/x
  3. Step 3: Cross multiply
    392,693,210.48x = 541,918,273.02 × 216,477,337.88
  4. Step 4: Simplify right side
    392,693,210.48x = 117,313,025,092,439,632
  5. Step 5: Solve for x
    x = 117,313,025,092,439,632/392,693,210.48
  6. Step 6: Final answer
    x = 298,739,631.76

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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.