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Finding the Fourth Proportional to 485,595.29, 670,124.43 and 281,767.59

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Solution

The fourth proportional to 485,595.29, 670,124.43 and 281,767.59 is: 388,840.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,595.29 : 670,124.43 = 281,767.59 : x
  2. Step 2: Convert to fraction form
    485,595.29/670,124.43 = 281,767.59/x
  3. Step 3: Cross multiply
    485,595.29x = 670,124.43 × 281,767.59
  4. Step 4: Simplify right side
    485,595.29x = 188,819,345,641.22
  5. Step 5: Solve for x
    x = 188,819,345,641.22/485,595.29
  6. Step 6: Final answer
    x = 388,840.97

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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.