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Finding the Fourth Proportional to 343,710.47, 515,442.69 and 119,010.58

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Solution

The fourth proportional to 343,710.47, 515,442.69 and 119,010.58 is: 178,473.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,710.47 : 515,442.69 = 119,010.58 : x
  2. Step 2: Convert to fraction form
    343,710.47/515,442.69 = 119,010.58/x
  3. Step 3: Cross multiply
    343,710.47x = 515,442.69 × 119,010.58
  4. Step 4: Simplify right side
    343,710.47x = 61,343,132,205.05
  5. Step 5: Solve for x
    x = 61,343,132,205.05/343,710.47
  6. Step 6: Final answer
    x = 178,473.27

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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.