Home / 374,719.76-517,132.20-221,845.68

Finding the Fourth Proportional to 374,719.76, 517,132.20 and 221,845.68

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Solution

The fourth proportional to 374,719.76, 517,132.20 and 221,845.68 is: 306,158.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,719.76 : 517,132.20 = 221,845.68 : x
  2. Step 2: Convert to fraction form
    374,719.76/517,132.20 = 221,845.68/x
  3. Step 3: Cross multiply
    374,719.76x = 517,132.20 × 221,845.68
  4. Step 4: Simplify right side
    374,719.76x = 114,723,544,558.90
  5. Step 5: Solve for x
    x = 114,723,544,558.90/374,719.76
  6. Step 6: Final answer
    x = 306,158.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.