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Finding the Fourth Proportional to 389,955.20, 584,479.20 and 179,614.40

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Solution

The fourth proportional to 389,955.20, 584,479.20 and 179,614.40 is: 269,212.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,955.20 : 584,479.20 = 179,614.40 : x
  2. Step 2: Convert to fraction form
    389,955.20/584,479.20 = 179,614.40/x
  3. Step 3: Cross multiply
    389,955.20x = 584,479.20 × 179,614.40
  4. Step 4: Simplify right side
    389,955.20x = 104,980,880,820.48
  5. Step 5: Solve for x
    x = 104,980,880,820.48/389,955.20
  6. Step 6: Final answer
    x = 269,212.67

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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.