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Finding the Fourth Proportional to 289,614.40, 434,421.60 and 245,874.40

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Solution

The fourth proportional to 289,614.40, 434,421.60 and 245,874.40 is: 368,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,614.40 : 434,421.60 = 245,874.40 : x
  2. Step 2: Convert to fraction form
    289,614.40/434,421.60 = 245,874.40/x
  3. Step 3: Cross multiply
    289,614.40x = 434,421.60 × 245,874.40
  4. Step 4: Simplify right side
    289,614.40x = 106,813,150,247.04
  5. Step 5: Solve for x
    x = 106,813,150,247.04/289,614.40
  6. Step 6: Final answer
    x = 368,811.60

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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.