Home / 209,610,999.21-289,264,300.56-120,295,821.23

Finding the Fourth Proportional to 209,610,999.21, 289,264,300.56 and 120,295,821.23

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Solution

The fourth proportional to 209,610,999.21, 289,264,300.56 and 120,295,821.23 is: 166,008,877.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,610,999.21 : 289,264,300.56 = 120,295,821.23 : x
  2. Step 2: Convert to fraction form
    209,610,999.21/289,264,300.56 = 120,295,821.23/x
  3. Step 3: Cross multiply
    209,610,999.21x = 289,264,300.56 × 120,295,821.23
  4. Step 4: Simplify right side
    209,610,999.21x = 34,797,286,588,386,752
  5. Step 5: Solve for x
    x = 34,797,286,588,386,752/209,610,999.21
  6. Step 6: Final answer
    x = 166,008,877.01

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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.