Home / 290,271.34-434,744.10-138,575.12

Finding the Fourth Proportional to 290,271.34, 434,744.10 and 138,575.12

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Solution

The fourth proportional to 290,271.34, 434,744.10 and 138,575.12 is: 207,546.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,271.34 : 434,744.10 = 138,575.12 : x
  2. Step 2: Convert to fraction form
    290,271.34/434,744.10 = 138,575.12/x
  3. Step 3: Cross multiply
    290,271.34x = 434,744.10 × 138,575.12
  4. Step 4: Simplify right side
    290,271.34x = 60,244,715,826.79
  5. Step 5: Solve for x
    x = 60,244,715,826.79/290,271.34
  6. Step 6: Final answer
    x = 207,546.21

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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.