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Finding the Fourth Proportional to 456,663.30, 630,448.70 and 275,420.94

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Solution

The fourth proportional to 456,663.30, 630,448.70 and 275,420.94 is: 380,233.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,663.30 : 630,448.70 = 275,420.94 : x
  2. Step 2: Convert to fraction form
    456,663.30/630,448.70 = 275,420.94/x
  3. Step 3: Cross multiply
    456,663.30x = 630,448.70 × 275,420.94
  4. Step 4: Simplify right side
    456,663.30x = 173,638,772,198.67
  5. Step 5: Solve for x
    x = 173,638,772,198.67/456,663.30
  6. Step 6: Final answer
    x = 380,233.69

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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.