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Finding the Fourth Proportional to 307,337.76, 424,393.78 and 192,813.28

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Solution

The fourth proportional to 307,337.76, 424,393.78 and 192,813.28 is: 266,250.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,337.76 : 424,393.78 = 192,813.28 : x
  2. Step 2: Convert to fraction form
    307,337.76/424,393.78 = 192,813.28/x
  3. Step 3: Cross multiply
    307,337.76x = 424,393.78 × 192,813.28
  4. Step 4: Simplify right side
    307,337.76x = 81,828,756,781.86
  5. Step 5: Solve for x
    x = 81,828,756,781.86/307,337.76
  6. Step 6: Final answer
    x = 266,250.25

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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.