Home / 282,981.05-390,542.49-162,138.36

Finding the Fourth Proportional to 282,981.05, 390,542.49 and 162,138.36

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Solution

The fourth proportional to 282,981.05, 390,542.49 and 162,138.36 is: 223,767.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,981.05 : 390,542.49 = 162,138.36 : x
  2. Step 2: Convert to fraction form
    282,981.05/390,542.49 = 162,138.36/x
  3. Step 3: Cross multiply
    282,981.05x = 390,542.49 × 162,138.36
  4. Step 4: Simplify right side
    282,981.05x = 63,321,918,838.92
  5. Step 5: Solve for x
    x = 63,321,918,838.92/282,981.05
  6. Step 6: Final answer
    x = 223,767.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.