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Finding the Fourth Proportional to 289,778.04, 434,415.78 and 112,162.80

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Solution

The fourth proportional to 289,778.04, 434,415.78 and 112,162.80 is: 168,146.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,778.04 : 434,415.78 = 112,162.80 : x
  2. Step 2: Convert to fraction form
    289,778.04/434,415.78 = 112,162.80/x
  3. Step 3: Cross multiply
    289,778.04x = 434,415.78 × 112,162.80
  4. Step 4: Simplify right side
    289,778.04x = 48,725,290,248.98
  5. Step 5: Solve for x
    x = 48,725,290,248.98/289,778.04
  6. Step 6: Final answer
    x = 168,146.94

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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.