Home / 279,660.49-385,918.18-158,785.91

Finding the Fourth Proportional to 279,660.49, 385,918.18 and 158,785.91

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Solution

The fourth proportional to 279,660.49, 385,918.18 and 158,785.91 is: 219,117.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,660.49 : 385,918.18 = 158,785.91 : x
  2. Step 2: Convert to fraction form
    279,660.49/385,918.18 = 158,785.91/x
  3. Step 3: Cross multiply
    279,660.49x = 385,918.18 × 158,785.91
  4. Step 4: Simplify right side
    279,660.49x = 61,278,369,396.84
  5. Step 5: Solve for x
    x = 61,278,369,396.84/279,660.49
  6. Step 6: Final answer
    x = 219,117.01

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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.