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Finding the Fourth Proportional to 372,077, 558,115.53 and 109,421

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Solution

The fourth proportional to 372,077, 558,115.53 and 109,421 is: 164,131.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,077 : 558,115.53 = 109,421 : x
  2. Step 2: Convert to fraction form
    372,077/558,115.53 = 109,421/x
  3. Step 3: Cross multiply
    372,077x = 558,115.53 × 109,421
  4. Step 4: Simplify right side
    372,077x = 61,069,559,408.13
  5. Step 5: Solve for x
    x = 61,069,559,408.13/372,077
  6. Step 6: Final answer
    x = 164,131.51

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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.