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Finding the Fourth Proportional to 500,139, 690,192.36 and 273,785.04

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Solution

The fourth proportional to 500,139, 690,192.36 and 273,785.04 is: 377,823.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,139 : 690,192.36 = 273,785.04 : x
  2. Step 2: Convert to fraction form
    500,139/690,192.36 = 273,785.04/x
  3. Step 3: Cross multiply
    500,139x = 690,192.36 × 273,785.04
  4. Step 4: Simplify right side
    500,139x = 188,964,342,890.29
  5. Step 5: Solve for x
    x = 188,964,342,890.29/500,139
  6. Step 6: Final answer
    x = 377,823.65

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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.