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Finding the Fourth Proportional to 343,889.60, 515,834.40 and 238,913.60

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Solution

The fourth proportional to 343,889.60, 515,834.40 and 238,913.60 is: 358,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,889.60 : 515,834.40 = 238,913.60 : x
  2. Step 2: Convert to fraction form
    343,889.60/515,834.40 = 238,913.60/x
  3. Step 3: Cross multiply
    343,889.60x = 515,834.40 × 238,913.60
  4. Step 4: Simplify right side
    343,889.60x = 123,239,853,507.84
  5. Step 5: Solve for x
    x = 123,239,853,507.84/343,889.60
  6. Step 6: Final answer
    x = 358,370.40

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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.