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Finding the Fourth Proportional to 469,303.42, 648,173.29 and 318,137.98

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Solution

The fourth proportional to 469,303.42, 648,173.29 and 318,137.98 is: 439,392.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,303.42 : 648,173.29 = 318,137.98 : x
  2. Step 2: Convert to fraction form
    469,303.42/648,173.29 = 318,137.98/x
  3. Step 3: Cross multiply
    469,303.42x = 648,173.29 × 318,137.98
  4. Step 4: Simplify right side
    469,303.42x = 206,208,541,170.55
  5. Step 5: Solve for x
    x = 206,208,541,170.55/469,303.42
  6. Step 6: Final answer
    x = 439,392.79

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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.