Home / 315,020,128.20-472,388,474.70-120,867,016.20

Finding the Fourth Proportional to 315,020,128.20, 472,388,474.70 and 120,867,016.20

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Solution

The fourth proportional to 315,020,128.20, 472,388,474.70 and 120,867,016.20 is: 181,246,150.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,020,128.20 : 472,388,474.70 = 120,867,016.20 : x
  2. Step 2: Convert to fraction form
    315,020,128.20/472,388,474.70 = 120,867,016.20/x
  3. Step 3: Cross multiply
    315,020,128.20x = 472,388,474.70 × 120,867,016.20
  4. Step 4: Simplify right side
    315,020,128.20x = 57,096,185,424,258,192
  5. Step 5: Solve for x
    x = 57,096,185,424,258,192/315,020,128.20
  6. Step 6: Final answer
    x = 181,246,150.05

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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.