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Finding the Fourth Proportional to 403,259.69, 556,494.15 and 221,967.73

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Solution

The fourth proportional to 403,259.69, 556,494.15 and 221,967.73 is: 306,313.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,259.69 : 556,494.15 = 221,967.73 : x
  2. Step 2: Convert to fraction form
    403,259.69/556,494.15 = 221,967.73/x
  3. Step 3: Cross multiply
    403,259.69x = 556,494.15 × 221,967.73
  4. Step 4: Simplify right side
    403,259.69x = 123,523,742,903.73
  5. Step 5: Solve for x
    x = 123,523,742,903.73/403,259.69
  6. Step 6: Final answer
    x = 306,313.14

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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.