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Finding the Fourth Proportional to 372,078, 558,117.03 and 109,422

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Solution

The fourth proportional to 372,078, 558,117.03 and 109,422 is: 164,133.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,078 : 558,117.03 = 109,422 : x
  2. Step 2: Convert to fraction form
    372,078/558,117.03 = 109,422/x
  3. Step 3: Cross multiply
    372,078x = 558,117.03 × 109,422
  4. Step 4: Simplify right side
    372,078x = 61,070,281,656.66
  5. Step 5: Solve for x
    x = 61,070,281,656.66/372,078
  6. Step 6: Final answer
    x = 164,133.01

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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.