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Finding the Fourth Proportional to 402,676.86, 555,697.86 and 221,390.04

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Solution

The fourth proportional to 402,676.86, 555,697.86 and 221,390.04 is: 305,520.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,676.86 : 555,697.86 = 221,390.04 : x
  2. Step 2: Convert to fraction form
    402,676.86/555,697.86 = 221,390.04/x
  3. Step 3: Cross multiply
    402,676.86x = 555,697.86 × 221,390.04
  4. Step 4: Simplify right side
    402,676.86x = 123,025,971,453.31
  5. Step 5: Solve for x
    x = 123,025,971,453.31/402,676.86
  6. Step 6: Final answer
    x = 305,520.34

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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.