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Finding the Fourth Proportional to 311,633.65, 430,054.42 and 168,393.69

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Solution

The fourth proportional to 311,633.65, 430,054.42 and 168,393.69 is: 232,383.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,633.65 : 430,054.42 = 168,393.69 : x
  2. Step 2: Convert to fraction form
    311,633.65/430,054.42 = 168,393.69/x
  3. Step 3: Cross multiply
    311,633.65x = 430,054.42 × 168,393.69
  4. Step 4: Simplify right side
    311,633.65x = 72,418,448,534.34
  5. Step 5: Solve for x
    x = 72,418,448,534.34/311,633.65
  6. Step 6: Final answer
    x = 232,383.28

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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.