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Finding the Fourth Proportional to 449,356.32, 620,111.28 and 248,151.84

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Solution

The fourth proportional to 449,356.32, 620,111.28 and 248,151.84 is: 342,449.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,356.32 : 620,111.28 = 248,151.84 : x
  2. Step 2: Convert to fraction form
    449,356.32/620,111.28 = 248,151.84/x
  3. Step 3: Cross multiply
    449,356.32x = 620,111.28 × 248,151.84
  4. Step 4: Simplify right side
    449,356.32x = 153,881,755,136.76
  5. Step 5: Solve for x
    x = 153,881,755,136.76/449,356.32
  6. Step 6: Final answer
    x = 342,449.30

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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.