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Finding the Fourth Proportional to 309,298.28, 426,824.66 and 180,228.76

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Solution

The fourth proportional to 309,298.28, 426,824.66 and 180,228.76 is: 248,711.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,298.28 : 426,824.66 = 180,228.76 : x
  2. Step 2: Convert to fraction form
    309,298.28/426,824.66 = 180,228.76/x
  3. Step 3: Cross multiply
    309,298.28x = 426,824.66 × 180,228.76
  4. Step 4: Simplify right side
    309,298.28x = 76,926,079,209.22
  5. Step 5: Solve for x
    x = 76,926,079,209.22/309,298.28
  6. Step 6: Final answer
    x = 248,711.63

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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.