Home / 258,023.68-387,079.32-80,526.76

Finding the Fourth Proportional to 258,023.68, 387,079.32 and 80,526.76

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Solution

The fourth proportional to 258,023.68, 387,079.32 and 80,526.76 is: 120,803.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,023.68 : 387,079.32 = 80,526.76 : x
  2. Step 2: Convert to fraction form
    258,023.68/387,079.32 = 80,526.76/x
  3. Step 3: Cross multiply
    258,023.68x = 387,079.32 × 80,526.76
  4. Step 4: Simplify right side
    258,023.68x = 31,170,243,502.60
  5. Step 5: Solve for x
    x = 31,170,243,502.60/258,023.68
  6. Step 6: Final answer
    x = 120,803.81

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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.