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Finding the Fourth Proportional to 383,615,999.80, 575,423,999.70 and 168,205,247.80

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Solution

The fourth proportional to 383,615,999.80, 575,423,999.70 and 168,205,247.80 is: 252,307,871.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,615,999.80 : 575,423,999.70 = 168,205,247.80 : x
  2. Step 2: Convert to fraction form
    383,615,999.80/575,423,999.70 = 168,205,247.80/x
  3. Step 3: Cross multiply
    383,615,999.80x = 575,423,999.70 × 168,205,247.80
  4. Step 4: Simplify right side
    383,615,999.80x = 96,789,336,459,605,648
  5. Step 5: Solve for x
    x = 96,789,336,459,605,648/383,615,999.80
  6. Step 6: Final answer
    x = 252,307,871.70

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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.