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Finding the Fourth Proportional to 360,403.02, 496,820.79 and 309,168.90

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Solution

The fourth proportional to 360,403.02, 496,820.79 and 309,168.90 is: 426,193.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,403.02 : 496,820.79 = 309,168.90 : x
  2. Step 2: Convert to fraction form
    360,403.02/496,820.79 = 309,168.90/x
  3. Step 3: Cross multiply
    360,403.02x = 496,820.79 × 309,168.90
  4. Step 4: Simplify right side
    360,403.02x = 153,601,537,141.43
  5. Step 5: Solve for x
    x = 153,601,537,141.43/360,403.02
  6. Step 6: Final answer
    x = 426,193.81

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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.