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Finding the Fourth Proportional to 500,013.36, 690,018.12 and 273,658.32

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Solution

The fourth proportional to 500,013.36, 690,018.12 and 273,658.32 is: 377,648.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,013.36 : 690,018.12 = 273,658.32 : x
  2. Step 2: Convert to fraction form
    500,013.36/690,018.12 = 273,658.32/x
  3. Step 3: Cross multiply
    500,013.36x = 690,018.12 × 273,658.32
  4. Step 4: Simplify right side
    500,013.36x = 188,829,199,488.76
  5. Step 5: Solve for x
    x = 188,829,199,488.76/500,013.36
  6. Step 6: Final answer
    x = 377,648.31

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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.