Home / 397,826,985.96-549,018,171.72-221,614,768.08

Finding the Fourth Proportional to 397,826,985.96, 549,018,171.72 and 221,614,768.08

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Solution

The fourth proportional to 397,826,985.96, 549,018,171.72 and 221,614,768.08 is: 305,837,811.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,826,985.96 : 549,018,171.72 = 221,614,768.08 : x
  2. Step 2: Convert to fraction form
    397,826,985.96/549,018,171.72 = 221,614,768.08/x
  3. Step 3: Cross multiply
    397,826,985.96x = 549,018,171.72 × 221,614,768.08
  4. Step 4: Simplify right side
    397,826,985.96x = 121,670,534,797,433,424
  5. Step 5: Solve for x
    x = 121,670,534,797,433,424/397,826,985.96
  6. Step 6: Final answer
    x = 305,837,811.64

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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.