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Finding the Fourth Proportional to 260,692,858.80, 391,291,230.60 and 158,656,186.80

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Solution

The fourth proportional to 260,692,858.80, 391,291,230.60 and 158,656,186.80 is: 238,137,610.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,692,858.80 : 391,291,230.60 = 158,656,186.80 : x
  2. Step 2: Convert to fraction form
    260,692,858.80/391,291,230.60 = 158,656,186.80/x
  3. Step 3: Cross multiply
    260,692,858.80x = 391,291,230.60 × 158,656,186.80
  4. Step 4: Simplify right side
    260,692,858.80x = 62,080,774,575,275,488
  5. Step 5: Solve for x
    x = 62,080,774,575,275,488/260,692,858.80
  6. Step 6: Final answer
    x = 238,137,610.91

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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.