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Finding the Fourth Proportional to 403,907.67, 557,389.80 and 222,619.71

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Solution

The fourth proportional to 403,907.67, 557,389.80 and 222,619.71 is: 307,213.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,907.67 : 557,389.80 = 222,619.71 : x
  2. Step 2: Convert to fraction form
    403,907.67/557,389.80 = 222,619.71/x
  3. Step 3: Cross multiply
    403,907.67x = 557,389.80 × 222,619.71
  4. Step 4: Simplify right side
    403,907.67x = 124,085,955,632.96
  5. Step 5: Solve for x
    x = 124,085,955,632.96/403,907.67
  6. Step 6: Final answer
    x = 307,213.67

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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.