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Finding the Fourth Proportional to 340,520.60, 469,918.40 and 197,363.68

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Solution

The fourth proportional to 340,520.60, 469,918.40 and 197,363.68 is: 272,361.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,520.60 : 469,918.40 = 197,363.68 : x
  2. Step 2: Convert to fraction form
    340,520.60/469,918.40 = 197,363.68/x
  3. Step 3: Cross multiply
    340,520.60x = 469,918.40 × 197,363.68
  4. Step 4: Simplify right side
    340,520.60x = 92,744,822,374.12
  5. Step 5: Solve for x
    x = 92,744,822,374.12/340,520.60
  6. Step 6: Final answer
    x = 272,361.86

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1.5x scale

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.