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Finding the Fourth Proportional to 308,873.41, 426,025.58 and 283,461.82

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Solution

The fourth proportional to 308,873.41, 426,025.58 and 283,461.82 is: 390,975.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,873.41 : 426,025.58 = 283,461.82 : x
  2. Step 2: Convert to fraction form
    308,873.41/426,025.58 = 283,461.82/x
  3. Step 3: Cross multiply
    308,873.41x = 426,025.58 × 283,461.82
  4. Step 4: Simplify right side
    308,873.41x = 120,761,983,790.98
  5. Step 5: Solve for x
    x = 120,761,983,790.98/308,873.41
  6. Step 6: Final answer
    x = 390,975.66

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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.