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Finding the Fourth Proportional to 515,173.60, 772,215 and 173,291.57

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Solution

The fourth proportional to 515,173.60, 772,215 and 173,291.57 is: 259,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,173.60 : 772,215 = 173,291.57 : x
  2. Step 2: Convert to fraction form
    515,173.60/772,215 = 173,291.57/x
  3. Step 3: Cross multiply
    515,173.60x = 772,215 × 173,291.57
  4. Step 4: Simplify right side
    515,173.60x = 133,818,349,727.55
  5. Step 5: Solve for x
    x = 133,818,349,727.55/515,173.60
  6. Step 6: Final answer
    x = 259,753.90

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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.