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Finding the Fourth Proportional to 575,819.21, 863,728.72 and 309,212.98

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Solution

The fourth proportional to 575,819.21, 863,728.72 and 309,212.98 is: 463,819.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,819.21 : 863,728.72 = 309,212.98 : x
  2. Step 2: Convert to fraction form
    575,819.21/863,728.72 = 309,212.98/x
  3. Step 3: Cross multiply
    575,819.21x = 863,728.72 × 309,212.98
  4. Step 4: Simplify right side
    575,819.21x = 267,076,128,490.43
  5. Step 5: Solve for x
    x = 267,076,128,490.43/575,819.21
  6. Step 6: Final answer
    x = 463,819.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.