Home / 315,048,028.20-472,572,042.30-85,016,743.80

Finding the Fourth Proportional to 315,048,028.20, 472,572,042.30 and 85,016,743.80

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Solution

The fourth proportional to 315,048,028.20, 472,572,042.30 and 85,016,743.80 is: 127,525,115.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,048,028.20 : 472,572,042.30 = 85,016,743.80 : x
  2. Step 2: Convert to fraction form
    315,048,028.20/472,572,042.30 = 85,016,743.80/x
  3. Step 3: Cross multiply
    315,048,028.20x = 472,572,042.30 × 85,016,743.80
  4. Step 4: Simplify right side
    315,048,028.20x = 40,176,536,247,261,864
  5. Step 5: Solve for x
    x = 40,176,536,247,261,864/315,048,028.20
  6. Step 6: Final answer
    x = 127,525,115.70

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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.