Home / 398,186,633.20-549,530,279.88-219,605,457.82

Finding the Fourth Proportional to 398,186,633.20, 549,530,279.88 and 219,605,457.82

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Solution

The fourth proportional to 398,186,633.20, 549,530,279.88 and 219,605,457.82 is: 303,073,580.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,186,633.20 : 549,530,279.88 = 219,605,457.82 : x
  2. Step 2: Convert to fraction form
    398,186,633.20/549,530,279.88 = 219,605,457.82/x
  3. Step 3: Cross multiply
    398,186,633.20x = 549,530,279.88 × 219,605,457.82
  4. Step 4: Simplify right side
    398,186,633.20x = 120,679,848,699,000,128
  5. Step 5: Solve for x
    x = 120,679,848,699,000,128/398,186,633.20
  6. Step 6: Final answer
    x = 303,073,580.67

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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.