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Finding the Fourth Proportional to 402,593.58, 555,586.03 and 221,313.15

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Solution

The fourth proportional to 402,593.58, 555,586.03 and 221,313.15 is: 305,415.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,593.58 : 555,586.03 = 221,313.15 : x
  2. Step 2: Convert to fraction form
    402,593.58/555,586.03 = 221,313.15/x
  3. Step 3: Cross multiply
    402,593.58x = 555,586.03 × 221,313.15
  4. Step 4: Simplify right side
    402,593.58x = 122,958,494,395.30
  5. Step 5: Solve for x
    x = 122,958,494,395.30/402,593.58
  6. Step 6: Final answer
    x = 305,415.93

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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.