Home / 306,372.90-459,279.18-128,892.42

Finding the Fourth Proportional to 306,372.90, 459,279.18 and 128,892.42

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Solution

The fourth proportional to 306,372.90, 459,279.18 and 128,892.42 is: 193,220.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,372.90 : 459,279.18 = 128,892.42 : x
  2. Step 2: Convert to fraction form
    306,372.90/459,279.18 = 128,892.42/x
  3. Step 3: Cross multiply
    306,372.90x = 459,279.18 × 128,892.42
  4. Step 4: Simplify right side
    306,372.90x = 59,197,604,965.82
  5. Step 5: Solve for x
    x = 59,197,604,965.82/306,372.90
  6. Step 6: Final answer
    x = 193,220.76

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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.