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Finding the Fourth Proportional to 289,726.60, 434,523.45 and 79,380.94

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Solution

The fourth proportional to 289,726.60, 434,523.45 and 79,380.94 is: 119,053.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,726.60 : 434,523.45 = 79,380.94 : x
  2. Step 2: Convert to fraction form
    289,726.60/434,523.45 = 79,380.94/x
  3. Step 3: Cross multiply
    289,726.60x = 434,523.45 × 79,380.94
  4. Step 4: Simplify right side
    289,726.60x = 34,492,879,913.04
  5. Step 5: Solve for x
    x = 34,492,879,913.04/289,726.60
  6. Step 6: Final answer
    x = 119,053.20

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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.