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Finding the Fourth Proportional to 291,089.80, 401,703.30 and 163,765.48

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Solution

The fourth proportional to 291,089.80, 401,703.30 and 163,765.48 is: 225,996.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,089.80 : 401,703.30 = 163,765.48 : x
  2. Step 2: Convert to fraction form
    291,089.80/401,703.30 = 163,765.48/x
  3. Step 3: Cross multiply
    291,089.80x = 401,703.30 × 163,765.48
  4. Step 4: Simplify right side
    291,089.80x = 65,785,133,742.08
  5. Step 5: Solve for x
    x = 65,785,133,742.08/291,089.80
  6. Step 6: Final answer
    x = 225,996.01

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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.