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Finding the Fourth Proportional to 449,748.09, 620,651.32 and 256,155.76

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Solution

The fourth proportional to 449,748.09, 620,651.32 and 256,155.76 is: 353,494.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,748.09 : 620,651.32 = 256,155.76 : x
  2. Step 2: Convert to fraction form
    449,748.09/620,651.32 = 256,155.76/x
  3. Step 3: Cross multiply
    449,748.09x = 620,651.32 × 256,155.76
  4. Step 4: Simplify right side
    449,748.09x = 158,983,410,569.60
  5. Step 5: Solve for x
    x = 158,983,410,569.60/449,748.09
  6. Step 6: Final answer
    x = 353,494.35

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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.