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Finding the Fourth Proportional to 309,875.90, 427,671.63 and 173,917.94

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Solution

The fourth proportional to 309,875.90, 427,671.63 and 173,917.94 is: 240,030.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,875.90 : 427,671.63 = 173,917.94 : x
  2. Step 2: Convert to fraction form
    309,875.90/427,671.63 = 173,917.94/x
  3. Step 3: Cross multiply
    309,875.90x = 427,671.63 × 173,917.94
  4. Step 4: Simplify right side
    309,875.90x = 74,379,766,747.68
  5. Step 5: Solve for x
    x = 74,379,766,747.68/309,875.90
  6. Step 6: Final answer
    x = 240,030.83

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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.