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Finding the Fourth Proportional to 402,992.02, 556,502.43 and 259,997.86

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Solution

The fourth proportional to 402,992.02, 556,502.43 and 259,997.86 is: 359,037.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,992.02 : 556,502.43 = 259,997.86 : x
  2. Step 2: Convert to fraction form
    402,992.02/556,502.43 = 259,997.86/x
  3. Step 3: Cross multiply
    402,992.02x = 556,502.43 × 259,997.86
  4. Step 4: Simplify right side
    402,992.02x = 144,689,440,884.80
  5. Step 5: Solve for x
    x = 144,689,440,884.80/402,992.02
  6. Step 6: Final answer
    x = 359,037.98

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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.