Home / 207,312.86-311,582.73-172,003.21

Finding the Fourth Proportional to 207,312.86, 311,582.73 and 172,003.21

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Solution

The fourth proportional to 207,312.86, 311,582.73 and 172,003.21 is: 258,513.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,312.86 : 311,582.73 = 172,003.21 : x
  2. Step 2: Convert to fraction form
    207,312.86/311,582.73 = 172,003.21/x
  3. Step 3: Cross multiply
    207,312.86x = 311,582.73 × 172,003.21
  4. Step 4: Simplify right side
    207,312.86x = 53,593,229,740.56
  5. Step 5: Solve for x
    x = 53,593,229,740.56/207,312.86
  6. Step 6: Final answer
    x = 258,513.77

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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.