Home / 289,295.06-434,011.85-120,721.59

Finding the Fourth Proportional to 289,295.06, 434,011.85 and 120,721.59

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Solution

The fourth proportional to 289,295.06, 434,011.85 and 120,721.59 is: 181,111.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,295.06 : 434,011.85 = 120,721.59 : x
  2. Step 2: Convert to fraction form
    289,295.06/434,011.85 = 120,721.59/x
  3. Step 3: Cross multiply
    289,295.06x = 434,011.85 × 120,721.59
  4. Step 4: Simplify right side
    289,295.06x = 52,394,600,007.23
  5. Step 5: Solve for x
    x = 52,394,600,007.23/289,295.06
  6. Step 6: Final answer
    x = 181,111.28

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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.