Home / 209,124,321.09-288,589,970.40-115,036,447.20

Finding the Fourth Proportional to 209,124,321.09, 288,589,970.40 and 115,036,447.20

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Solution

The fourth proportional to 209,124,321.09, 288,589,970.40 and 115,036,447.20 is: 158,749,421.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,124,321.09 : 288,589,970.40 = 115,036,447.20 : x
  2. Step 2: Convert to fraction form
    209,124,321.09/288,589,970.40 = 115,036,447.20/x
  3. Step 3: Cross multiply
    209,124,321.09x = 288,589,970.40 × 115,036,447.20
  4. Step 4: Simplify right side
    209,124,321.09x = 33,198,364,892,369,160
  5. Step 5: Solve for x
    x = 33,198,364,892,369,160/209,124,321.09
  6. Step 6: Final answer
    x = 158,749,421.01

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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.