Home / 387,100.41-580,650.40-120,883.74

Finding the Fourth Proportional to 387,100.41, 580,650.40 and 120,883.74

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Solution

The fourth proportional to 387,100.41, 580,650.40 and 120,883.74 is: 181,325.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,100.41 : 580,650.40 = 120,883.74 : x
  2. Step 2: Convert to fraction form
    387,100.41/580,650.40 = 120,883.74/x
  3. Step 3: Cross multiply
    387,100.41x = 580,650.40 × 120,883.74
  4. Step 4: Simplify right side
    387,100.41x = 70,191,191,984.50
  5. Step 5: Solve for x
    x = 70,191,191,984.50/387,100.41
  6. Step 6: Final answer
    x = 181,325.54

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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.