Home / 289,828.70-434,540.55-171,439.10

Finding the Fourth Proportional to 289,828.70, 434,540.55 and 171,439.10

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Solution

The fourth proportional to 289,828.70, 434,540.55 and 171,439.10 is: 257,038.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,828.70 : 434,540.55 = 171,439.10 : x
  2. Step 2: Convert to fraction form
    289,828.70/434,540.55 = 171,439.10/x
  3. Step 3: Cross multiply
    289,828.70x = 434,540.55 × 171,439.10
  4. Step 4: Simplify right side
    289,828.70x = 74,497,240,805.51
  5. Step 5: Solve for x
    x = 74,497,240,805.51/289,828.70
  6. Step 6: Final answer
    x = 257,038.87

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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.