Home / 290,103.24-434,855.50-121,721.34

Finding the Fourth Proportional to 290,103.24, 434,855.50 and 121,721.34

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Solution

The fourth proportional to 290,103.24, 434,855.50 and 121,721.34 is: 182,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,103.24 : 434,855.50 = 121,721.34 : x
  2. Step 2: Convert to fraction form
    290,103.24/434,855.50 = 121,721.34/x
  3. Step 3: Cross multiply
    290,103.24x = 434,855.50 × 121,721.34
  4. Step 4: Simplify right side
    290,103.24x = 52,931,194,166.37
  5. Step 5: Solve for x
    x = 52,931,194,166.37/290,103.24
  6. Step 6: Final answer
    x = 182,456.40

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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.