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Finding the Fourth Proportional to 449,593.16, 620,431.32 and 245,639.70

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Solution

The fourth proportional to 449,593.16, 620,431.32 and 245,639.70 is: 338,978.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,593.16 : 620,431.32 = 245,639.70 : x
  2. Step 2: Convert to fraction form
    449,593.16/620,431.32 = 245,639.70/x
  3. Step 3: Cross multiply
    449,593.16x = 620,431.32 × 245,639.70
  4. Step 4: Simplify right side
    449,593.16x = 152,402,563,315.40
  5. Step 5: Solve for x
    x = 152,402,563,315.40/449,593.16
  6. Step 6: Final answer
    x = 338,978.83

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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.