Home / 387,268,640.72-534,432,534.01-220,014,079.65

Finding the Fourth Proportional to 387,268,640.72, 534,432,534.01 and 220,014,079.65

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Solution

The fourth proportional to 387,268,640.72, 534,432,534.01 and 220,014,079.65 is: 303,620,458.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,268,640.72 : 534,432,534.01 = 220,014,079.65 : x
  2. Step 2: Convert to fraction form
    387,268,640.72/534,432,534.01 = 220,014,079.65/x
  3. Step 3: Cross multiply
    387,268,640.72x = 534,432,534.01 × 220,014,079.65
  4. Step 4: Simplify right side
    387,268,640.72x = 117,582,682,103,341,360
  5. Step 5: Solve for x
    x = 117,582,682,103,341,360/387,268,640.72
  6. Step 6: Final answer
    x = 303,620,458.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.