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Finding the Fourth Proportional to 454,642.36, 627,401.45 and 250,711.20

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Solution

The fourth proportional to 454,642.36, 627,401.45 and 250,711.20 is: 345,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,642.36 : 627,401.45 = 250,711.20 : x
  2. Step 2: Convert to fraction form
    454,642.36/627,401.45 = 250,711.20/x
  3. Step 3: Cross multiply
    454,642.36x = 627,401.45 × 250,711.20
  4. Step 4: Simplify right side
    454,642.36x = 157,296,571,038.02
  5. Step 5: Solve for x
    x = 157,296,571,038.02/454,642.36
  6. Step 6: Final answer
    x = 345,978.70

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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.