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Finding the Fourth Proportional to 218,095.80, 300,957.28 and 122,617.32

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Solution

The fourth proportional to 218,095.80, 300,957.28 and 122,617.32 is: 169,203.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,095.80 : 300,957.28 = 122,617.32 : x
  2. Step 2: Convert to fraction form
    218,095.80/300,957.28 = 122,617.32/x
  3. Step 3: Cross multiply
    218,095.80x = 300,957.28 × 122,617.32
  4. Step 4: Simplify right side
    218,095.80x = 36,902,575,108.09
  5. Step 5: Solve for x
    x = 36,902,575,108.09/218,095.80
  6. Step 6: Final answer
    x = 169,203.51

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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.