Home / 389,429.68-583,997.64-136,631.92

Finding the Fourth Proportional to 389,429.68, 583,997.64 and 136,631.92

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Solution

The fourth proportional to 389,429.68, 583,997.64 and 136,631.92 is: 204,896.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,429.68 : 583,997.64 = 136,631.92 : x
  2. Step 2: Convert to fraction form
    389,429.68/583,997.64 = 136,631.92/x
  3. Step 3: Cross multiply
    389,429.68x = 583,997.64 × 136,631.92
  4. Step 4: Simplify right side
    389,429.68x = 79,792,718,828.67
  5. Step 5: Solve for x
    x = 79,792,718,828.67/389,429.68
  6. Step 6: Final answer
    x = 204,896.35

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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.