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Finding the Fourth Proportional to 389,957.20, 584,482.20 and 179,616.40

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Solution

The fourth proportional to 389,957.20, 584,482.20 and 179,616.40 is: 269,215.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,957.20 : 584,482.20 = 179,616.40 : x
  2. Step 2: Convert to fraction form
    389,957.20/584,482.20 = 179,616.40/x
  3. Step 3: Cross multiply
    389,957.20x = 584,482.20 × 179,616.40
  4. Step 4: Simplify right side
    389,957.20x = 104,982,588,628.08
  5. Step 5: Solve for x
    x = 104,982,588,628.08/389,957.20
  6. Step 6: Final answer
    x = 269,215.67

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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.