Home / 289,300.23-434,019.66-120,726.78

Finding the Fourth Proportional to 289,300.23, 434,019.66 and 120,726.78

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Solution

The fourth proportional to 289,300.23, 434,019.66 and 120,726.78 is: 181,119.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,300.23 : 434,019.66 = 120,726.78 : x
  2. Step 2: Convert to fraction form
    289,300.23/434,019.66 = 120,726.78/x
  3. Step 3: Cross multiply
    289,300.23x = 434,019.66 × 120,726.78
  4. Step 4: Simplify right side
    289,300.23x = 52,397,796,008.49
  5. Step 5: Solve for x
    x = 52,397,796,008.49/289,300.23
  6. Step 6: Final answer
    x = 181,119.10

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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.