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Finding the Fourth Proportional to 315,967.34, 435,974.60 and 179,998.32

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Solution

The fourth proportional to 315,967.34, 435,974.60 and 179,998.32 is: 248,363.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,967.34 : 435,974.60 = 179,998.32 : x
  2. Step 2: Convert to fraction form
    315,967.34/435,974.60 = 179,998.32/x
  3. Step 3: Cross multiply
    315,967.34x = 435,974.60 × 179,998.32
  4. Step 4: Simplify right side
    315,967.34x = 78,474,695,562.67
  5. Step 5: Solve for x
    x = 78,474,695,562.67/315,967.34
  6. Step 6: Final answer
    x = 248,363.31

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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.