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Finding the Fourth Proportional to 354,613.60, 531,920.40 and 275,298.40

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Solution

The fourth proportional to 354,613.60, 531,920.40 and 275,298.40 is: 412,947.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,613.60 : 531,920.40 = 275,298.40 : x
  2. Step 2: Convert to fraction form
    354,613.60/531,920.40 = 275,298.40/x
  3. Step 3: Cross multiply
    354,613.60x = 531,920.40 × 275,298.40
  4. Step 4: Simplify right side
    354,613.60x = 146,436,835,047.36
  5. Step 5: Solve for x
    x = 146,436,835,047.36/354,613.60
  6. Step 6: Final answer
    x = 412,947.60

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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.