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Finding the Fourth Proportional to 403,237.85, 556,463.85 and 221,945.90

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Solution

The fourth proportional to 403,237.85, 556,463.85 and 221,945.90 is: 306,282.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,237.85 : 556,463.85 = 221,945.90 : x
  2. Step 2: Convert to fraction form
    403,237.85/556,463.85 = 221,945.90/x
  3. Step 3: Cross multiply
    403,237.85x = 556,463.85 × 221,945.90
  4. Step 4: Simplify right side
    403,237.85x = 123,504,870,005.72
  5. Step 5: Solve for x
    x = 123,504,870,005.72/403,237.85
  6. Step 6: Final answer
    x = 306,282.93

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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.