Home / 209,124,314.80-288,589,961.77-115,036,440.89

Finding the Fourth Proportional to 209,124,314.80, 288,589,961.77 and 115,036,440.89

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Solution

The fourth proportional to 209,124,314.80, 288,589,961.77 and 115,036,440.89 is: 158,749,412.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,124,314.80 : 288,589,961.77 = 115,036,440.89 : x
  2. Step 2: Convert to fraction form
    209,124,314.80/288,589,961.77 = 115,036,440.89/x
  3. Step 3: Cross multiply
    209,124,314.80x = 288,589,961.77 × 115,036,440.89
  4. Step 4: Simplify right side
    209,124,314.80x = 33,198,362,076,871,424
  5. Step 5: Solve for x
    x = 33,198,362,076,871,424/209,124,314.80
  6. Step 6: Final answer
    x = 158,749,412.32

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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.