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Finding the Fourth Proportional to 372,130.80, 557,850.60 and 259,810.80

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Solution

The fourth proportional to 372,130.80, 557,850.60 and 259,810.80 is: 389,474.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,130.80 : 557,850.60 = 259,810.80 : x
  2. Step 2: Convert to fraction form
    372,130.80/557,850.60 = 259,810.80/x
  3. Step 3: Cross multiply
    372,130.80x = 557,850.60 × 259,810.80
  4. Step 4: Simplify right side
    372,130.80x = 144,935,610,666.48
  5. Step 5: Solve for x
    x = 144,935,610,666.48/372,130.80
  6. Step 6: Final answer
    x = 389,474.91

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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.