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Finding the Fourth Proportional to 449,492.77, 620,318.88 and 258,506.31

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Solution

The fourth proportional to 449,492.77, 620,318.88 and 258,506.31 is: 356,749.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,492.77 : 620,318.88 = 258,506.31 : x
  2. Step 2: Convert to fraction form
    449,492.77/620,318.88 = 258,506.31/x
  3. Step 3: Cross multiply
    449,492.77x = 620,318.88 × 258,506.31
  4. Step 4: Simplify right side
    449,492.77x = 160,356,343,399.60
  5. Step 5: Solve for x
    x = 160,356,343,399.60/449,492.77
  6. Step 6: Final answer
    x = 356,749.55

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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.