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Finding the Fourth Proportional to 459,992.79, 634,790.12 and 256,039.38

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Solution

The fourth proportional to 459,992.79, 634,790.12 and 256,039.38 is: 353,334.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,992.79 : 634,790.12 = 256,039.38 : x
  2. Step 2: Convert to fraction form
    459,992.79/634,790.12 = 256,039.38/x
  3. Step 3: Cross multiply
    459,992.79x = 634,790.12 × 256,039.38
  4. Step 4: Simplify right side
    459,992.79x = 162,531,267,474.73
  5. Step 5: Solve for x
    x = 162,531,267,474.73/459,992.79
  6. Step 6: Final answer
    x = 353,334.38

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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.