Home / 398,427,576.20-549,830,788.84-222,226,928.72

Finding the Fourth Proportional to 398,427,576.20, 549,830,788.84 and 222,226,928.72

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Solution

The fourth proportional to 398,427,576.20, 549,830,788.84 and 222,226,928.72 is: 306,673,570.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,427,576.20 : 549,830,788.84 = 222,226,928.72 : x
  2. Step 2: Convert to fraction form
    398,427,576.20/549,830,788.84 = 222,226,928.72/x
  3. Step 3: Cross multiply
    398,427,576.20x = 549,830,788.84 × 222,226,928.72
  4. Step 4: Simplify right side
    398,427,576.20x = 122,187,207,519,608,064
  5. Step 5: Solve for x
    x = 122,187,207,519,608,064/398,427,576.20
  6. Step 6: Final answer
    x = 306,673,570.85

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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.