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Finding the Fourth Proportional to 343,509.89, 515,311.70 and 118,810.08

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Solution

The fourth proportional to 343,509.89, 515,311.70 and 118,810.08 is: 178,231.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,509.89 : 515,311.70 = 118,810.08 : x
  2. Step 2: Convert to fraction form
    343,509.89/515,311.70 = 118,810.08/x
  3. Step 3: Cross multiply
    343,509.89x = 515,311.70 × 118,810.08
  4. Step 4: Simplify right side
    343,509.89x = 61,224,223,707.89
  5. Step 5: Solve for x
    x = 61,224,223,707.89/343,509.89
  6. Step 6: Final answer
    x = 178,231.33

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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.