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Finding the Fourth Proportional to 536,143.60, 740,044.26 and 345,157

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Solution

The fourth proportional to 536,143.60, 740,044.26 and 345,157 is: 476,423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,143.60 : 740,044.26 = 345,157 : x
  2. Step 2: Convert to fraction form
    536,143.60/740,044.26 = 345,157/x
  3. Step 3: Cross multiply
    536,143.60x = 740,044.26 × 345,157
  4. Step 4: Simplify right side
    536,143.60x = 255,431,456,648.82
  5. Step 5: Solve for x
    x = 255,431,456,648.82/536,143.60
  6. Step 6: Final answer
    x = 476,423.59

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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.