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Finding the Fourth Proportional to 341,562.78, 512,521.48 and 139,307.26

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Solution

The fourth proportional to 341,562.78, 512,521.48 and 139,307.26 is: 209,033.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,562.78 : 512,521.48 = 139,307.26 : x
  2. Step 2: Convert to fraction form
    341,562.78/512,521.48 = 139,307.26/x
  3. Step 3: Cross multiply
    341,562.78x = 512,521.48 × 139,307.26
  4. Step 4: Simplify right side
    341,562.78x = 71,397,963,221.25
  5. Step 5: Solve for x
    x = 71,397,963,221.25/341,562.78
  6. Step 6: Final answer
    x = 209,033.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.