Home / 289,008.18-398,967.66-217,415.52

Finding the Fourth Proportional to 289,008.18, 398,967.66 and 217,415.52

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Solution

The fourth proportional to 289,008.18, 398,967.66 and 217,415.52 is: 300,136.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,008.18 : 398,967.66 = 217,415.52 : x
  2. Step 2: Convert to fraction form
    289,008.18/398,967.66 = 217,415.52/x
  3. Step 3: Cross multiply
    289,008.18x = 398,967.66 × 217,415.52
  4. Step 4: Simplify right side
    289,008.18x = 86,741,761,262.08
  5. Step 5: Solve for x
    x = 86,741,761,262.08/289,008.18
  6. Step 6: Final answer
    x = 300,136.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.