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Finding the Fourth Proportional to 343,098.88, 472,419.80 and 304,791.76

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Solution

The fourth proportional to 343,098.88, 472,419.80 and 304,791.76 is: 419,673.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,098.88 : 472,419.80 = 304,791.76 : x
  2. Step 2: Convert to fraction form
    343,098.88/472,419.80 = 304,791.76/x
  3. Step 3: Cross multiply
    343,098.88x = 472,419.80 × 304,791.76
  4. Step 4: Simplify right side
    343,098.88x = 143,989,662,300.85
  5. Step 5: Solve for x
    x = 143,989,662,300.85/343,098.88
  6. Step 6: Final answer
    x = 419,673.95

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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.