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Finding the Fourth Proportional to 402,757.60, 603,445.20 and 191,941.60

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Solution

The fourth proportional to 402,757.60, 603,445.20 and 191,941.60 is: 287,583.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,757.60 : 603,445.20 = 191,941.60 : x
  2. Step 2: Convert to fraction form
    402,757.60/603,445.20 = 191,941.60/x
  3. Step 3: Cross multiply
    402,757.60x = 603,445.20 × 191,941.60
  4. Step 4: Simplify right side
    402,757.60x = 115,826,237,200.32
  5. Step 5: Solve for x
    x = 115,826,237,200.32/402,757.60
  6. Step 6: Final answer
    x = 287,583.00

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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.