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Finding the Fourth Proportional to 291,995.70, 437,750.55 and 123,645.30

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Solution

The fourth proportional to 291,995.70, 437,750.55 and 123,645.30 is: 185,365.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,995.70 : 437,750.55 = 123,645.30 : x
  2. Step 2: Convert to fraction form
    291,995.70/437,750.55 = 123,645.30/x
  3. Step 3: Cross multiply
    291,995.70x = 437,750.55 × 123,645.30
  4. Step 4: Simplify right side
    291,995.70x = 54,125,798,079.92
  5. Step 5: Solve for x
    x = 54,125,798,079.92/291,995.70
  6. Step 6: Final answer
    x = 185,365.05

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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.