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Finding the Fourth Proportional to 500,313.81, 690,433.50 and 270,871.26

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Solution

The fourth proportional to 500,313.81, 690,433.50 and 270,871.26 is: 373,802.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,313.81 : 690,433.50 = 270,871.26 : x
  2. Step 2: Convert to fraction form
    500,313.81/690,433.50 = 270,871.26/x
  3. Step 3: Cross multiply
    500,313.81x = 690,433.50 × 270,871.26
  4. Step 4: Simplify right side
    500,313.81x = 187,018,592,091.21
  5. Step 5: Solve for x
    x = 187,018,592,091.21/500,313.81
  6. Step 6: Final answer
    x = 373,802.58

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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.