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Finding the Fourth Proportional to 500,381.79, 690,525.84 and 270,939.01

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Solution

The fourth proportional to 500,381.79, 690,525.84 and 270,939.01 is: 373,895.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,381.79 : 690,525.84 = 270,939.01 : x
  2. Step 2: Convert to fraction form
    500,381.79/690,525.84 = 270,939.01/x
  3. Step 3: Cross multiply
    500,381.79x = 690,525.84 × 270,939.01
  4. Step 4: Simplify right side
    500,381.79x = 187,090,386,758.73
  5. Step 5: Solve for x
    x = 187,090,386,758.73/500,381.79
  6. Step 6: Final answer
    x = 373,895.27

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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.