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Finding the Fourth Proportional to 500,313.84, 690,433.32 and 270,871.12

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Solution

The fourth proportional to 500,313.84, 690,433.32 and 270,871.12 is: 373,802.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,313.84 : 690,433.32 = 270,871.12 : x
  2. Step 2: Convert to fraction form
    500,313.84/690,433.32 = 270,871.12/x
  3. Step 3: Cross multiply
    500,313.84x = 690,433.32 × 270,871.12
  4. Step 4: Simplify right side
    500,313.84x = 187,018,446,673.72
  5. Step 5: Solve for x
    x = 187,018,446,673.72/500,313.84
  6. Step 6: Final answer
    x = 373,802.27

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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.