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Finding the Fourth Proportional to 342,666.84, 472,814.63 and 221,791.35

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Solution

The fourth proportional to 342,666.84, 472,814.63 and 221,791.35 is: 306,029.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,666.84 : 472,814.63 = 221,791.35 : x
  2. Step 2: Convert to fraction form
    342,666.84/472,814.63 = 221,791.35/x
  3. Step 3: Cross multiply
    342,666.84x = 472,814.63 × 221,791.35
  4. Step 4: Simplify right side
    342,666.84x = 104,866,196,583.27
  5. Step 5: Solve for x
    x = 104,866,196,583.27/342,666.84
  6. Step 6: Final answer
    x = 306,029.60

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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.