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Finding the Fourth Proportional to 343,337.20, 515,005.80 and 201,619.60

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Solution

The fourth proportional to 343,337.20, 515,005.80 and 201,619.60 is: 302,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,337.20 : 515,005.80 = 201,619.60 : x
  2. Step 2: Convert to fraction form
    343,337.20/515,005.80 = 201,619.60/x
  3. Step 3: Cross multiply
    343,337.20x = 515,005.80 × 201,619.60
  4. Step 4: Simplify right side
    343,337.20x = 103,835,263,393.68
  5. Step 5: Solve for x
    x = 103,835,263,393.68/343,337.20
  6. Step 6: Final answer
    x = 302,429.40

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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.