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Finding the Fourth Proportional to 449,594.16, 620,432.70 and 245,640.70

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Solution

The fourth proportional to 449,594.16, 620,432.70 and 245,640.70 is: 338,980.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,594.16 : 620,432.70 = 245,640.70 : x
  2. Step 2: Convert to fraction form
    449,594.16/620,432.70 = 245,640.70/x
  3. Step 3: Cross multiply
    449,594.16x = 620,432.70 × 245,640.70
  4. Step 4: Simplify right side
    449,594.16x = 152,403,522,730.89
  5. Step 5: Solve for x
    x = 152,403,522,730.89/449,594.16
  6. Step 6: Final answer
    x = 338,980.21

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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.