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Finding the Fourth Proportional to 343,510.89, 515,313.20 and 118,811.08

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Solution

The fourth proportional to 343,510.89, 515,313.20 and 118,811.08 is: 178,232.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,510.89 : 515,313.20 = 118,811.08 : x
  2. Step 2: Convert to fraction form
    343,510.89/515,313.20 = 118,811.08/x
  3. Step 3: Cross multiply
    343,510.89x = 515,313.20 × 118,811.08
  4. Step 4: Simplify right side
    343,510.89x = 61,224,917,830.26
  5. Step 5: Solve for x
    x = 61,224,917,830.26/343,510.89
  6. Step 6: Final answer
    x = 178,232.83

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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.