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Finding the Fourth Proportional to 464,387.18, 640,860.82 and 280,600.25

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Solution

The fourth proportional to 464,387.18, 640,860.82 and 280,600.25 is: 387,232.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,387.18 : 640,860.82 = 280,600.25 : x
  2. Step 2: Convert to fraction form
    464,387.18/640,860.82 = 280,600.25/x
  3. Step 3: Cross multiply
    464,387.18x = 640,860.82 × 280,600.25
  4. Step 4: Simplify right side
    464,387.18x = 179,825,702,401.40
  5. Step 5: Solve for x
    x = 179,825,702,401.40/464,387.18
  6. Step 6: Final answer
    x = 387,232.28

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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.