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Finding the Fourth Proportional to 449,493.35, 620,319.68 and 258,506.90

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Solution

The fourth proportional to 449,493.35, 620,319.68 and 258,506.90 is: 356,750.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,493.35 : 620,319.68 = 258,506.90 : x
  2. Step 2: Convert to fraction form
    449,493.35/620,319.68 = 258,506.90/x
  3. Step 3: Cross multiply
    449,493.35x = 620,319.68 × 258,506.90
  4. Step 4: Simplify right side
    449,493.35x = 160,356,913,091.66
  5. Step 5: Solve for x
    x = 160,356,913,091.66/449,493.35
  6. Step 6: Final answer
    x = 356,750.36

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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.