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Finding the Fourth Proportional to 292,910.40, 439,365.60 and 135,446.40

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Solution

The fourth proportional to 292,910.40, 439,365.60 and 135,446.40 is: 203,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,910.40 : 439,365.60 = 135,446.40 : x
  2. Step 2: Convert to fraction form
    292,910.40/439,365.60 = 135,446.40/x
  3. Step 3: Cross multiply
    292,910.40x = 439,365.60 × 135,446.40
  4. Step 4: Simplify right side
    292,910.40x = 59,510,488,803.84
  5. Step 5: Solve for x
    x = 59,510,488,803.84/292,910.40
  6. Step 6: Final answer
    x = 203,169.60

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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.