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Finding the Fourth Proportional to 289,444.47, 434,153.34 and 79,081.80

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Solution

The fourth proportional to 289,444.47, 434,153.34 and 79,081.80 is: 118,619.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,444.47 : 434,153.34 = 79,081.80 : x
  2. Step 2: Convert to fraction form
    289,444.47/434,153.34 = 79,081.80/x
  3. Step 3: Cross multiply
    289,444.47x = 434,153.34 × 79,081.80
  4. Step 4: Simplify right side
    289,444.47x = 34,333,627,603.21
  5. Step 5: Solve for x
    x = 34,333,627,603.21/289,444.47
  6. Step 6: Final answer
    x = 118,619.05

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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.