Home / 289,018.88-398,837.81-159,962.65

Finding the Fourth Proportional to 289,018.88, 398,837.81 and 159,962.65

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Solution

The fourth proportional to 289,018.88, 398,837.81 and 159,962.65 is: 220,743.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,018.88 : 398,837.81 = 159,962.65 : x
  2. Step 2: Convert to fraction form
    289,018.88/398,837.81 = 159,962.65/x
  3. Step 3: Cross multiply
    289,018.88x = 398,837.81 × 159,962.65
  4. Step 4: Simplify right side
    289,018.88x = 63,799,151,679.53
  5. Step 5: Solve for x
    x = 63,799,151,679.53/289,018.88
  6. Step 6: Final answer
    x = 220,743.89

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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.