Home / 398,427,567.71-549,830,777.12-222,226,920.21

Finding the Fourth Proportional to 398,427,567.71, 549,830,777.12 and 222,226,920.21

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Solution

The fourth proportional to 398,427,567.71, 549,830,777.12 and 222,226,920.21 is: 306,673,559.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,427,567.71 : 549,830,777.12 = 222,226,920.21 : x
  2. Step 2: Convert to fraction form
    398,427,567.71/549,830,777.12 = 222,226,920.21/x
  3. Step 3: Cross multiply
    398,427,567.71x = 549,830,777.12 × 222,226,920.21
  4. Step 4: Simplify right side
    398,427,567.71x = 122,187,200,234,937,408
  5. Step 5: Solve for x
    x = 122,187,200,234,937,408/398,427,567.71
  6. Step 6: Final answer
    x = 306,673,559.11

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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.