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Finding the Fourth Proportional to 402,727.89, 555,750.25 and 221,438.55

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Solution

The fourth proportional to 402,727.89, 555,750.25 and 221,438.55 is: 305,577.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,727.89 : 555,750.25 = 221,438.55 : x
  2. Step 2: Convert to fraction form
    402,727.89/555,750.25 = 221,438.55/x
  3. Step 3: Cross multiply
    402,727.89x = 555,750.25 × 221,438.55
  4. Step 4: Simplify right side
    402,727.89x = 123,064,529,522.14
  5. Step 5: Solve for x
    x = 123,064,529,522.14/402,727.89
  6. Step 6: Final answer
    x = 305,577.37

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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.