Home / 218,107,440.80-326,594,290.80-172,379,895.20

Finding the Fourth Proportional to 218,107,440.80, 326,594,290.80 and 172,379,895.20

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Solution

The fourth proportional to 218,107,440.80, 326,594,290.80 and 172,379,895.20 is: 258,121,820.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,107,440.80 : 326,594,290.80 = 172,379,895.20 : x
  2. Step 2: Convert to fraction form
    218,107,440.80/326,594,290.80 = 172,379,895.20/x
  3. Step 3: Cross multiply
    218,107,440.80x = 326,594,290.80 × 172,379,895.20
  4. Step 4: Simplify right side
    218,107,440.80x = 56,298,289,621,022,320
  5. Step 5: Solve for x
    x = 56,298,289,621,022,320/218,107,440.80
  6. Step 6: Final answer
    x = 258,121,820.21

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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.