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Finding the Fourth Proportional to 315,223.56, 434,990.69 and 179,290.58

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Solution

The fourth proportional to 315,223.56, 434,990.69 and 179,290.58 is: 247,410.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,223.56 : 434,990.69 = 179,290.58 : x
  2. Step 2: Convert to fraction form
    315,223.56/434,990.69 = 179,290.58/x
  3. Step 3: Cross multiply
    315,223.56x = 434,990.69 × 179,290.58
  4. Step 4: Simplify right side
    315,223.56x = 77,989,730,705.63
  5. Step 5: Solve for x
    x = 77,989,730,705.63/315,223.56
  6. Step 6: Final answer
    x = 247,410.86

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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.