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Finding the Fourth Proportional to 456,578.43, 630,331.62 and 275,336.28

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Solution

The fourth proportional to 456,578.43, 630,331.62 and 275,336.28 is: 380,116.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,578.43 : 630,331.62 = 275,336.28 : x
  2. Step 2: Convert to fraction form
    456,578.43/630,331.62 = 275,336.28/x
  3. Step 3: Cross multiply
    456,578.43x = 630,331.62 × 275,336.28
  4. Step 4: Simplify right side
    456,578.43x = 173,553,163,417.17
  5. Step 5: Solve for x
    x = 173,553,163,417.17/456,578.43
  6. Step 6: Final answer
    x = 380,116.87

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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.