Home / 253,240.07-379,719.87-103,585.45

Finding the Fourth Proportional to 253,240.07, 379,719.87 and 103,585.45

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Solution

The fourth proportional to 253,240.07, 379,719.87 and 103,585.45 is: 155,320.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,240.07 : 379,719.87 = 103,585.45 : x
  2. Step 2: Convert to fraction form
    253,240.07/379,719.87 = 103,585.45/x
  3. Step 3: Cross multiply
    253,240.07x = 379,719.87 × 103,585.45
  4. Step 4: Simplify right side
    253,240.07x = 39,333,452,982.12
  5. Step 5: Solve for x
    x = 39,333,452,982.12/253,240.07
  6. Step 6: Final answer
    x = 155,320.81

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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.