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Finding the Fourth Proportional to 500,012.30, 690,033.44 and 273,657.80

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Solution

The fourth proportional to 500,012.30, 690,033.44 and 273,657.80 is: 377,656.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,012.30 : 690,033.44 = 273,657.80 : x
  2. Step 2: Convert to fraction form
    500,012.30/690,033.44 = 273,657.80/x
  3. Step 3: Cross multiply
    500,012.30x = 690,033.44 × 273,657.80
  4. Step 4: Simplify right side
    500,012.30x = 188,833,030,350.81
  5. Step 5: Solve for x
    x = 188,833,030,350.81/500,012.30
  6. Step 6: Final answer
    x = 377,656.77

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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.