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Finding the Fourth Proportional to 213,488.70, 294,478.29 and 162,389.30

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Solution

The fourth proportional to 213,488.70, 294,478.29 and 162,389.30 is: 223,993.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,488.70 : 294,478.29 = 162,389.30 : x
  2. Step 2: Convert to fraction form
    213,488.70/294,478.29 = 162,389.30/x
  3. Step 3: Cross multiply
    213,488.70x = 294,478.29 × 162,389.30
  4. Step 4: Simplify right side
    213,488.70x = 47,820,121,905.91
  5. Step 5: Solve for x
    x = 47,820,121,905.91/213,488.70
  6. Step 6: Final answer
    x = 223,993.69

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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.