Home / 289,434.87-399,438.54-162,118.26

Finding the Fourth Proportional to 289,434.87, 399,438.54 and 162,118.26

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Solution

The fourth proportional to 289,434.87, 399,438.54 and 162,118.26 is: 223,733.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,434.87 : 399,438.54 = 162,118.26 : x
  2. Step 2: Convert to fraction form
    289,434.87/399,438.54 = 162,118.26/x
  3. Step 3: Cross multiply
    289,434.87x = 399,438.54 × 162,118.26
  4. Step 4: Simplify right side
    289,434.87x = 64,756,281,081.74
  5. Step 5: Solve for x
    x = 64,756,281,081.74/289,434.87
  6. Step 6: Final answer
    x = 223,733.52

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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.