Home / 213,506,500.20-319,622,021.10-127,200,481.80

Finding the Fourth Proportional to 213,506,500.20, 319,622,021.10 and 127,200,481.80

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Solution

The fourth proportional to 213,506,500.20, 319,622,021.10 and 127,200,481.80 is: 190,420,783.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,506,500.20 : 319,622,021.10 = 127,200,481.80 : x
  2. Step 2: Convert to fraction form
    213,506,500.20/319,622,021.10 = 127,200,481.80/x
  3. Step 3: Cross multiply
    213,506,500.20x = 319,622,021.10 × 127,200,481.80
  4. Step 4: Simplify right side
    213,506,500.20x = 40,656,075,077,809,768
  5. Step 5: Solve for x
    x = 40,656,075,077,809,768/213,506,500.20
  6. Step 6: Final answer
    x = 190,420,783.63

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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.