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Finding the Fourth Proportional to 372,143, 558,399.12 and 147,498.44

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Solution

The fourth proportional to 372,143, 558,399.12 and 147,498.44 is: 221,320.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,143 : 558,399.12 = 147,498.44 : x
  2. Step 2: Convert to fraction form
    372,143/558,399.12 = 147,498.44/x
  3. Step 3: Cross multiply
    372,143x = 558,399.12 × 147,498.44
  4. Step 4: Simplify right side
    372,143x = 82,362,999,097.37
  5. Step 5: Solve for x
    x = 82,362,999,097.37/372,143
  6. Step 6: Final answer
    x = 221,320.83

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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.