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Finding the Fourth Proportional to 469,190.50, 648,017.58 and 318,025.06

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Solution

The fourth proportional to 469,190.50, 648,017.58 and 318,025.06 is: 439,237.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,190.50 : 648,017.58 = 318,025.06 : x
  2. Step 2: Convert to fraction form
    469,190.50/648,017.58 = 318,025.06/x
  3. Step 3: Cross multiply
    469,190.50x = 648,017.58 × 318,025.06
  4. Step 4: Simplify right side
    469,190.50x = 206,085,829,760.56
  5. Step 5: Solve for x
    x = 206,085,829,760.56/469,190.50
  6. Step 6: Final answer
    x = 439,237.00

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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.