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Finding the Fourth Proportional to 488,309.40, 731,880.90 and 203,999.40

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Solution

The fourth proportional to 488,309.40, 731,880.90 and 203,999.40 is: 305,755.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,309.40 : 731,880.90 = 203,999.40 : x
  2. Step 2: Convert to fraction form
    488,309.40/731,880.90 = 203,999.40/x
  3. Step 3: Cross multiply
    488,309.40x = 731,880.90 × 203,999.40
  4. Step 4: Simplify right side
    488,309.40x = 149,303,264,471.46
  5. Step 5: Solve for x
    x = 149,303,264,471.46/488,309.40
  6. Step 6: Final answer
    x = 305,755.46

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1.5x scale

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.