Home / 289,292.90-434,008.62-120,719.45

Finding the Fourth Proportional to 289,292.90, 434,008.62 and 120,719.45

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Solution

The fourth proportional to 289,292.90, 434,008.62 and 120,719.45 is: 181,108.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,292.90 : 434,008.62 = 120,719.45 : x
  2. Step 2: Convert to fraction form
    289,292.90/434,008.62 = 120,719.45/x
  3. Step 3: Cross multiply
    289,292.90x = 434,008.62 × 120,719.45
  4. Step 4: Simplify right side
    289,292.90x = 52,393,282,986.68
  5. Step 5: Solve for x
    x = 52,393,282,986.68/289,292.90
  6. Step 6: Final answer
    x = 181,108.09

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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.