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Finding the Fourth Proportional to 343,661.40, 515,621.70 and 166,325.40

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Solution

The fourth proportional to 343,661.40, 515,621.70 and 166,325.40 is: 249,550.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,661.40 : 515,621.70 = 166,325.40 : x
  2. Step 2: Convert to fraction form
    343,661.40/515,621.70 = 166,325.40/x
  3. Step 3: Cross multiply
    343,661.40x = 515,621.70 × 166,325.40
  4. Step 4: Simplify right side
    343,661.40x = 85,760,985,501.18
  5. Step 5: Solve for x
    x = 85,760,985,501.18/343,661.40
  6. Step 6: Final answer
    x = 249,550.82

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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.