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Finding the Fourth Proportional to 500,018.81, 690,020.69 and 270,571.08

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Solution

The fourth proportional to 500,018.81, 690,020.69 and 270,571.08 is: 373,385.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,018.81 : 690,020.69 = 270,571.08 : x
  2. Step 2: Convert to fraction form
    500,018.81/690,020.69 = 270,571.08/x
  3. Step 3: Cross multiply
    500,018.81x = 690,020.69 × 270,571.08
  4. Step 4: Simplify right side
    500,018.81x = 186,699,643,992.07
  5. Step 5: Solve for x
    x = 186,699,643,992.07/500,018.81
  6. Step 6: Final answer
    x = 373,385.24

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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.