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Finding the Fourth Proportional to 354,909.60, 531,878.40 and 228,160.80

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Solution

The fourth proportional to 354,909.60, 531,878.40 and 228,160.80 is: 341,928.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,909.60 : 531,878.40 = 228,160.80 : x
  2. Step 2: Convert to fraction form
    354,909.60/531,878.40 = 228,160.80/x
  3. Step 3: Cross multiply
    354,909.60x = 531,878.40 × 228,160.80
  4. Step 4: Simplify right side
    354,909.60x = 121,353,801,246.72
  5. Step 5: Solve for x
    x = 121,353,801,246.72/354,909.60
  6. Step 6: Final answer
    x = 341,928.77

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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.