Home / 398,427,566.21-549,830,775.05-222,226,918.71

Finding the Fourth Proportional to 398,427,566.21, 549,830,775.05 and 222,226,918.71

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Solution

The fourth proportional to 398,427,566.21, 549,830,775.05 and 222,226,918.71 is: 306,673,557.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,427,566.21 : 549,830,775.05 = 222,226,918.71 : x
  2. Step 2: Convert to fraction form
    398,427,566.21/549,830,775.05 = 222,226,918.71/x
  3. Step 3: Cross multiply
    398,427,566.21x = 549,830,775.05 × 222,226,918.71
  4. Step 4: Simplify right side
    398,427,566.21x = 122,187,198,950,181,504
  5. Step 5: Solve for x
    x = 122,187,198,950,181,504/398,427,566.21
  6. Step 6: Final answer
    x = 306,673,557.04

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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.