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Finding the Fourth Proportional to 500,172.71, 690,238.32 and 273,818.21

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Solution

The fourth proportional to 500,172.71, 690,238.32 and 273,818.21 is: 377,869.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,172.71 : 690,238.32 = 273,818.21 : x
  2. Step 2: Convert to fraction form
    500,172.71/690,238.32 = 273,818.21/x
  3. Step 3: Cross multiply
    500,172.71x = 690,238.32 × 273,818.21
  4. Step 4: Simplify right side
    500,172.71x = 188,999,821,255.81
  5. Step 5: Solve for x
    x = 188,999,821,255.81/500,172.71
  6. Step 6: Final answer
    x = 377,869.12

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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.