Home / 381,192.76-571,643.24-128,405.33

Finding the Fourth Proportional to 381,192.76, 571,643.24 and 128,405.33

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Solution

The fourth proportional to 381,192.76, 571,643.24 and 128,405.33 is: 192,558.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,192.76 : 571,643.24 = 128,405.33 : x
  2. Step 2: Convert to fraction form
    381,192.76/571,643.24 = 128,405.33/x
  3. Step 3: Cross multiply
    381,192.76x = 571,643.24 × 128,405.33
  4. Step 4: Simplify right side
    381,192.76x = 73,402,035,374.23
  5. Step 5: Solve for x
    x = 73,402,035,374.23/381,192.76
  6. Step 6: Final answer
    x = 192,558.84

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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.