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Finding the Fourth Proportional to 358,871.11, 538,389.99 and 122,215.84

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Solution

The fourth proportional to 358,871.11, 538,389.99 and 122,215.84 is: 183,352.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,871.11 : 538,389.99 = 122,215.84 : x
  2. Step 2: Convert to fraction form
    358,871.11/538,389.99 = 122,215.84/x
  3. Step 3: Cross multiply
    358,871.11x = 538,389.99 × 122,215.84
  4. Step 4: Simplify right side
    358,871.11x = 65,799,783,529.47
  5. Step 5: Solve for x
    x = 65,799,783,529.47/358,871.11
  6. Step 6: Final answer
    x = 183,352.13

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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.