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Finding the Fourth Proportional to 307,934.76, 424,945.69 and 178,946.11

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Solution

The fourth proportional to 307,934.76, 424,945.69 and 178,946.11 is: 246,943.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,934.76 : 424,945.69 = 178,946.11 : x
  2. Step 2: Convert to fraction form
    307,934.76/424,945.69 = 178,946.11/x
  3. Step 3: Cross multiply
    307,934.76x = 424,945.69 × 178,946.11
  4. Step 4: Simplify right side
    307,934.76x = 76,042,379,277.15
  5. Step 5: Solve for x
    x = 76,042,379,277.15/307,934.76
  6. Step 6: Final answer
    x = 246,943.15

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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.