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Finding the Fourth Proportional to 621,365.31, 857,475.99 and 349,433.13

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Solution

The fourth proportional to 621,365.31, 857,475.99 and 349,433.13 is: 482,213.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,365.31 : 857,475.99 = 349,433.13 : x
  2. Step 2: Convert to fraction form
    621,365.31/857,475.99 = 349,433.13/x
  3. Step 3: Cross multiply
    621,365.31x = 857,475.99 × 349,433.13
  4. Step 4: Simplify right side
    621,365.31x = 299,630,519,085.55
  5. Step 5: Solve for x
    x = 299,630,519,085.55/621,365.31
  6. Step 6: Final answer
    x = 482,213.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.