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Finding the Fourth Proportional to 289,505.84, 434,258.94 and 79,127.96

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Solution

The fourth proportional to 289,505.84, 434,258.94 and 79,127.96 is: 118,691.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,505.84 : 434,258.94 = 79,127.96 : x
  2. Step 2: Convert to fraction form
    289,505.84/434,258.94 = 79,127.96/x
  3. Step 3: Cross multiply
    289,505.84x = 434,258.94 × 79,127.96
  4. Step 4: Simplify right side
    289,505.84x = 34,362,024,033.96
  5. Step 5: Solve for x
    x = 34,362,024,033.96/289,505.84
  6. Step 6: Final answer
    x = 118,691.99

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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.