Home / 217,271.70-299,981.48-135,724.55

Finding the Fourth Proportional to 217,271.70, 299,981.48 and 135,724.55

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Solution

The fourth proportional to 217,271.70, 299,981.48 and 135,724.55 is: 187,391.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,271.70 : 299,981.48 = 135,724.55 : x
  2. Step 2: Convert to fraction form
    217,271.70/299,981.48 = 135,724.55/x
  3. Step 3: Cross multiply
    217,271.70x = 299,981.48 × 135,724.55
  4. Step 4: Simplify right side
    217,271.70x = 40,714,849,202.80
  5. Step 5: Solve for x
    x = 40,714,849,202.80/217,271.70
  6. Step 6: Final answer
    x = 187,391.41

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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.