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Finding the Fourth Proportional to 389,969.70, 584,954.55 and 180,017.70

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Solution

The fourth proportional to 389,969.70, 584,954.55 and 180,017.70 is: 270,026.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,969.70 : 584,954.55 = 180,017.70 : x
  2. Step 2: Convert to fraction form
    389,969.70/584,954.55 = 180,017.70/x
  3. Step 3: Cross multiply
    389,969.70x = 584,954.55 × 180,017.70
  4. Step 4: Simplify right side
    389,969.70x = 105,302,172,695.54
  5. Step 5: Solve for x
    x = 105,302,172,695.54/389,969.70
  6. Step 6: Final answer
    x = 270,026.55

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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.