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Finding the Fourth Proportional to 451,513, 623,107.38 and 250,309

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Solution

The fourth proportional to 451,513, 623,107.38 and 250,309 is: 345,437.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,513 : 623,107.38 = 250,309 : x
  2. Step 2: Convert to fraction form
    451,513/623,107.38 = 250,309/x
  3. Step 3: Cross multiply
    451,513x = 623,107.38 × 250,309
  4. Step 4: Simplify right side
    451,513x = 155,969,385,180.42
  5. Step 5: Solve for x
    x = 155,969,385,180.42/451,513
  6. Step 6: Final answer
    x = 345,437.20

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1.5x scale

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.