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Finding the Fourth Proportional to 341,749.40, 513,045.30 and 215,389.40

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Solution

The fourth proportional to 341,749.40, 513,045.30 and 215,389.40 is: 323,349.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,749.40 : 513,045.30 = 215,389.40 : x
  2. Step 2: Convert to fraction form
    341,749.40/513,045.30 = 215,389.40/x
  3. Step 3: Cross multiply
    341,749.40x = 513,045.30 × 215,389.40
  4. Step 4: Simplify right side
    341,749.40x = 110,504,519,339.82
  5. Step 5: Solve for x
    x = 110,504,519,339.82/341,749.40
  6. Step 6: Final answer
    x = 323,349.56

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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.