Home / 402,748.40-555,777.86-221,449.55

Finding the Fourth Proportional to 402,748.40, 555,777.86 and 221,449.55

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Solution

The fourth proportional to 402,748.40, 555,777.86 and 221,449.55 is: 305,592.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,748.40 : 555,777.86 = 221,449.55 : x
  2. Step 2: Convert to fraction form
    402,748.40/555,777.86 = 221,449.55/x
  3. Step 3: Cross multiply
    402,748.40x = 555,777.86 × 221,449.55
  4. Step 4: Simplify right side
    402,748.40x = 123,076,753,110.83
  5. Step 5: Solve for x
    x = 123,076,753,110.83/402,748.40
  6. Step 6: Final answer
    x = 305,592.16

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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.