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Finding the Fourth Proportional to 289,445.97, 434,155.59 and 79,083.30

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Solution

The fourth proportional to 289,445.97, 434,155.59 and 79,083.30 is: 118,621.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,445.97 : 434,155.59 = 79,083.30 : x
  2. Step 2: Convert to fraction form
    289,445.97/434,155.59 = 79,083.30/x
  3. Step 3: Cross multiply
    289,445.97x = 434,155.59 × 79,083.30
  4. Step 4: Simplify right side
    289,445.97x = 34,334,456,770.65
  5. Step 5: Solve for x
    x = 34,334,456,770.65/289,445.97
  6. Step 6: Final answer
    x = 118,621.30

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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.