Home / 221,274.24-305,398.25-130,624.89

Finding the Fourth Proportional to 221,274.24, 305,398.25 and 130,624.89

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Solution

The fourth proportional to 221,274.24, 305,398.25 and 130,624.89 is: 180,285.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,274.24 : 305,398.25 = 130,624.89 : x
  2. Step 2: Convert to fraction form
    221,274.24/305,398.25 = 130,624.89/x
  3. Step 3: Cross multiply
    221,274.24x = 305,398.25 × 130,624.89
  4. Step 4: Simplify right side
    221,274.24x = 39,892,612,812.44
  5. Step 5: Solve for x
    x = 39,892,612,812.44/221,274.24
  6. Step 6: Final answer
    x = 180,285.84

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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.