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Finding the Fourth Proportional to 207,002.20, 310,503.30 and 172,010.20

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Solution

The fourth proportional to 207,002.20, 310,503.30 and 172,010.20 is: 258,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,002.20 : 310,503.30 = 172,010.20 : x
  2. Step 2: Convert to fraction form
    207,002.20/310,503.30 = 172,010.20/x
  3. Step 3: Cross multiply
    207,002.20x = 310,503.30 × 172,010.20
  4. Step 4: Simplify right side
    207,002.20x = 53,409,734,733.66
  5. Step 5: Solve for x
    x = 53,409,734,733.66/207,002.20
  6. Step 6: Final answer
    x = 258,015.30

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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.