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Finding the Fourth Proportional to 403,421.54, 556,699.82 and 222,099.08

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Solution

The fourth proportional to 403,421.54, 556,699.82 and 222,099.08 is: 306,484.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,421.54 : 556,699.82 = 222,099.08 : x
  2. Step 2: Convert to fraction form
    403,421.54/556,699.82 = 222,099.08/x
  3. Step 3: Cross multiply
    403,421.54x = 556,699.82 × 222,099.08
  4. Step 4: Simplify right side
    403,421.54x = 123,642,516,933.32
  5. Step 5: Solve for x
    x = 123,642,516,933.32/403,421.54
  6. Step 6: Final answer
    x = 306,484.67

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1.5x scale

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.