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Finding the Fourth Proportional to 315,072.80, 472,609.20 and 296,410.40

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Solution

The fourth proportional to 315,072.80, 472,609.20 and 296,410.40 is: 444,615.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,072.80 : 472,609.20 = 296,410.40 : x
  2. Step 2: Convert to fraction form
    315,072.80/472,609.20 = 296,410.40/x
  3. Step 3: Cross multiply
    315,072.80x = 472,609.20 × 296,410.40
  4. Step 4: Simplify right side
    315,072.80x = 140,086,282,015.68
  5. Step 5: Solve for x
    x = 140,086,282,015.68/315,072.80
  6. Step 6: Final answer
    x = 444,615.60

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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.