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Finding the Fourth Proportional to 343,608.74, 515,289.61 and 118,908.16

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Solution

The fourth proportional to 343,608.74, 515,289.61 and 118,908.16 is: 178,319.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,608.74 : 515,289.61 = 118,908.16 : x
  2. Step 2: Convert to fraction form
    343,608.74/515,289.61 = 118,908.16/x
  3. Step 3: Cross multiply
    343,608.74x = 515,289.61 × 118,908.16
  4. Step 4: Simplify right side
    343,608.74x = 61,272,137,806.72
  5. Step 5: Solve for x
    x = 61,272,137,806.72/343,608.74
  6. Step 6: Final answer
    x = 178,319.50

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