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Finding the Fourth Proportional to 289,395.83, 434,110.15 and 89,744.60

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Solution

The fourth proportional to 289,395.83, 434,110.15 and 89,744.60 is: 134,621.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,395.83 : 434,110.15 = 89,744.60 : x
  2. Step 2: Convert to fraction form
    289,395.83/434,110.15 = 89,744.60/x
  3. Step 3: Cross multiply
    289,395.83x = 434,110.15 × 89,744.60
  4. Step 4: Simplify right side
    289,395.83x = 38,959,041,365.60
  5. Step 5: Solve for x
    x = 38,959,041,365.60/289,395.83
  6. Step 6: Final answer
    x = 134,621.99

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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.