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Finding the Fourth Proportional to 307,969.50, 424,985.94 and 193,309.75

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Solution

The fourth proportional to 307,969.50, 424,985.94 and 193,309.75 is: 266,759.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,969.50 : 424,985.94 = 193,309.75 : x
  2. Step 2: Convert to fraction form
    307,969.50/424,985.94 = 193,309.75/x
  3. Step 3: Cross multiply
    307,969.50x = 424,985.94 × 193,309.75
  4. Step 4: Simplify right side
    307,969.50x = 82,153,925,814.92
  5. Step 5: Solve for x
    x = 82,153,925,814.92/307,969.50
  6. Step 6: Final answer
    x = 266,759.94

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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.