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Finding the Fourth Proportional to 500,243.79, 690,332.34 and 270,796.41

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Solution

The fourth proportional to 500,243.79, 690,332.34 and 270,796.41 is: 373,696.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,243.79 : 690,332.34 = 270,796.41 : x
  2. Step 2: Convert to fraction form
    500,243.79/690,332.34 = 270,796.41/x
  3. Step 3: Cross multiply
    500,243.79x = 690,332.34 × 270,796.41
  4. Step 4: Simplify right side
    500,243.79x = 186,939,519,378.90
  5. Step 5: Solve for x
    x = 186,939,519,378.90/500,243.79
  6. Step 6: Final answer
    x = 373,696.83

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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.