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Finding the Fourth Proportional to 372,087, 558,130.53 and 109,431

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Solution

The fourth proportional to 372,087, 558,130.53 and 109,431 is: 164,146.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,087 : 558,130.53 = 109,431 : x
  2. Step 2: Convert to fraction form
    372,087/558,130.53 = 109,431/x
  3. Step 3: Cross multiply
    372,087x = 558,130.53 × 109,431
  4. Step 4: Simplify right side
    372,087x = 61,076,782,028.43
  5. Step 5: Solve for x
    x = 61,076,782,028.43/372,087
  6. Step 6: Final answer
    x = 164,146.51

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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.