Home / 315,020,379.40-472,306,620.30-120,856,769.80

Finding the Fourth Proportional to 315,020,379.40, 472,306,620.30 and 120,856,769.80

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Solution

The fourth proportional to 315,020,379.40, 472,306,620.30 and 120,856,769.80 is: 181,199,237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,020,379.40 : 472,306,620.30 = 120,856,769.80 : x
  2. Step 2: Convert to fraction form
    315,020,379.40/472,306,620.30 = 120,856,769.80/x
  3. Step 3: Cross multiply
    315,020,379.40x = 472,306,620.30 × 120,856,769.80
  4. Step 4: Simplify right side
    315,020,379.40x = 57,081,452,484,613,104
  5. Step 5: Solve for x
    x = 57,081,452,484,613,104/315,020,379.40
  6. Step 6: Final answer
    x = 181,199,237.31

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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.