Home / 402,402.42-555,315.17-221,126.04

Finding the Fourth Proportional to 402,402.42, 555,315.17 and 221,126.04

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Solution

The fourth proportional to 402,402.42, 555,315.17 and 221,126.04 is: 305,153.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,402.42 : 555,315.17 = 221,126.04 : x
  2. Step 2: Convert to fraction form
    402,402.42/555,315.17 = 221,126.04/x
  3. Step 3: Cross multiply
    402,402.42x = 555,315.17 × 221,126.04
  4. Step 4: Simplify right side
    402,402.42x = 122,794,645,046.84
  5. Step 5: Solve for x
    x = 122,794,645,046.84/402,402.42
  6. Step 6: Final answer
    x = 305,153.84

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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.