Home / 291,139.79-401,772.08-163,815.39

Finding the Fourth Proportional to 291,139.79, 401,772.08 and 163,815.39

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Solution

The fourth proportional to 291,139.79, 401,772.08 and 163,815.39 is: 226,064.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,139.79 : 401,772.08 = 163,815.39 : x
  2. Step 2: Convert to fraction form
    291,139.79/401,772.08 = 163,815.39/x
  3. Step 3: Cross multiply
    291,139.79x = 401,772.08 × 163,815.39
  4. Step 4: Simplify right side
    291,139.79x = 65,816,450,385.85
  5. Step 5: Solve for x
    x = 65,816,450,385.85/291,139.79
  6. Step 6: Final answer
    x = 226,064.78

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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.