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Finding the Fourth Proportional to 389,600.80, 584,228.40 and 179,130.40

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Solution

The fourth proportional to 389,600.80, 584,228.40 and 179,130.40 is: 268,616.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,600.80 : 584,228.40 = 179,130.40 : x
  2. Step 2: Convert to fraction form
    389,600.80/584,228.40 = 179,130.40/x
  3. Step 3: Cross multiply
    389,600.80x = 584,228.40 × 179,130.40
  4. Step 4: Simplify right side
    389,600.80x = 104,653,066,983.36
  5. Step 5: Solve for x
    x = 104,653,066,983.36/389,600.80
  6. Step 6: Final answer
    x = 268,616.15

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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.