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Finding the Fourth Proportional to 500,117.20, 690,178.20 and 273,762.64

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Solution

The fourth proportional to 500,117.20, 690,178.20 and 273,762.64 is: 377,801.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,117.20 : 690,178.20 = 273,762.64 : x
  2. Step 2: Convert to fraction form
    500,117.20/690,178.20 = 273,762.64/x
  3. Step 3: Cross multiply
    500,117.20x = 690,178.20 × 273,762.64
  4. Step 4: Simplify right side
    500,117.20x = 188,945,006,102.45
  5. Step 5: Solve for x
    x = 188,945,006,102.45/500,117.20
  6. Step 6: Final answer
    x = 377,801.46

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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.