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Finding the Fourth Proportional to 449,907.76, 620,843.14 and 258,890.32

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Solution

The fourth proportional to 449,907.76, 620,843.14 and 258,890.32 is: 357,251.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,907.76 : 620,843.14 = 258,890.32 : x
  2. Step 2: Convert to fraction form
    449,907.76/620,843.14 = 258,890.32/x
  3. Step 3: Cross multiply
    449,907.76x = 620,843.14 × 258,890.32
  4. Step 4: Simplify right side
    449,907.76x = 160,730,279,184.41
  5. Step 5: Solve for x
    x = 160,730,279,184.41/449,907.76
  6. Step 6: Final answer
    x = 357,251.63

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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.