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Finding the Fourth Proportional to 402,596.60, 603,203.70 and 191,780.60

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Solution

The fourth proportional to 402,596.60, 603,203.70 and 191,780.60 is: 287,341.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,596.60 : 603,203.70 = 191,780.60 : x
  2. Step 2: Convert to fraction form
    402,596.60/603,203.70 = 191,780.60/x
  3. Step 3: Cross multiply
    402,596.60x = 603,203.70 × 191,780.60
  4. Step 4: Simplify right side
    402,596.60x = 115,682,767,508.22
  5. Step 5: Solve for x
    x = 115,682,767,508.22/402,596.60
  6. Step 6: Final answer
    x = 287,341.64

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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.