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Finding the Fourth Proportional to 372,075, 558,112.53 and 109,419

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Solution

The fourth proportional to 372,075, 558,112.53 and 109,419 is: 164,128.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,075 : 558,112.53 = 109,419 : x
  2. Step 2: Convert to fraction form
    372,075/558,112.53 = 109,419/x
  3. Step 3: Cross multiply
    372,075x = 558,112.53 × 109,419
  4. Step 4: Simplify right side
    372,075x = 61,068,114,920.07
  5. Step 5: Solve for x
    x = 61,068,114,920.07/372,075
  6. Step 6: Final answer
    x = 164,128.51

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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.