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Finding the Fourth Proportional to 343,199.04, 514,435.59 and 126,918.80

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Solution

The fourth proportional to 343,199.04, 514,435.59 and 126,918.80 is: 190,243.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,199.04 : 514,435.59 = 126,918.80 : x
  2. Step 2: Convert to fraction form
    343,199.04/514,435.59 = 126,918.80/x
  3. Step 3: Cross multiply
    343,199.04x = 514,435.59 × 126,918.80
  4. Step 4: Simplify right side
    343,199.04x = 65,291,545,187.91
  5. Step 5: Solve for x
    x = 65,291,545,187.91/343,199.04
  6. Step 6: Final answer
    x = 190,243.96

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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.