Home / 378,501,139.40-522,309,776.82-211,224,281.72

Finding the Fourth Proportional to 378,501,139.40, 522,309,776.82 and 211,224,281.72

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Solution

The fourth proportional to 378,501,139.40, 522,309,776.82 and 211,224,281.72 is: 291,477,345.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,501,139.40 : 522,309,776.82 = 211,224,281.72 : x
  2. Step 2: Convert to fraction form
    378,501,139.40/522,309,776.82 = 211,224,281.72/x
  3. Step 3: Cross multiply
    378,501,139.40x = 522,309,776.82 × 211,224,281.72
  4. Step 4: Simplify right side
    378,501,139.40x = 110,324,507,444,138,000
  5. Step 5: Solve for x
    x = 110,324,507,444,138,000/378,501,139.40
  6. Step 6: Final answer
    x = 291,477,345.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.