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Finding the Fourth Proportional to 515,170.35, 772,210.13 and 173,288.31

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Solution

The fourth proportional to 515,170.35, 772,210.13 and 173,288.31 is: 259,749.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,170.35 : 772,210.13 = 173,288.31 : x
  2. Step 2: Convert to fraction form
    515,170.35/772,210.13 = 173,288.31/x
  3. Step 3: Cross multiply
    515,170.35x = 772,210.13 × 173,288.31
  4. Step 4: Simplify right side
    515,170.35x = 133,814,987,526.14
  5. Step 5: Solve for x
    x = 133,814,987,526.14/515,170.35
  6. Step 6: Final answer
    x = 259,749.01

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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.