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Finding the Fourth Proportional to 289,299.71, 434,018.86 and 120,726.27

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Solution

The fourth proportional to 289,299.71, 434,018.86 and 120,726.27 is: 181,118.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,299.71 : 434,018.86 = 120,726.27 : x
  2. Step 2: Convert to fraction form
    289,299.71/434,018.86 = 120,726.27/x
  3. Step 3: Cross multiply
    289,299.71x = 434,018.86 × 120,726.27
  4. Step 4: Simplify right side
    289,299.71x = 52,397,477,775.64
  5. Step 5: Solve for x
    x = 52,397,477,775.64/289,299.71
  6. Step 6: Final answer
    x = 181,118.32

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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.