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Finding the Fourth Proportional to 402,561.30, 603,323.55 and 191,745.30

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Solution

The fourth proportional to 402,561.30, 603,323.55 and 191,745.30 is: 287,371.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,561.30 : 603,323.55 = 191,745.30 : x
  2. Step 2: Convert to fraction form
    402,561.30/603,323.55 = 191,745.30/x
  3. Step 3: Cross multiply
    402,561.30x = 603,323.55 × 191,745.30
  4. Step 4: Simplify right side
    402,561.30x = 115,684,455,091.82
  5. Step 5: Solve for x
    x = 115,684,455,091.82/402,561.30
  6. Step 6: Final answer
    x = 287,371.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.