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Finding the Fourth Proportional to 402,464.88, 555,404.16 and 221,191.74

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Solution

The fourth proportional to 402,464.88, 555,404.16 and 221,191.74 is: 305,246.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,464.88 : 555,404.16 = 221,191.74 : x
  2. Step 2: Convert to fraction form
    402,464.88/555,404.16 = 221,191.74/x
  3. Step 3: Cross multiply
    402,464.88x = 555,404.16 × 221,191.74
  4. Step 4: Simplify right side
    402,464.88x = 122,850,812,553.64
  5. Step 5: Solve for x
    x = 122,850,812,553.64/402,464.88
  6. Step 6: Final answer
    x = 305,246.04

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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.