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Finding the Fourth Proportional to 313,489.20, 432,663.96 and 177,530.16

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Solution

The fourth proportional to 313,489.20, 432,663.96 and 177,530.16 is: 245,019.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,489.20 : 432,663.96 = 177,530.16 : x
  2. Step 2: Convert to fraction form
    313,489.20/432,663.96 = 177,530.16/x
  3. Step 3: Cross multiply
    313,489.20x = 432,663.96 × 177,530.16
  4. Step 4: Simplify right side
    313,489.20x = 76,810,902,045.03
  5. Step 5: Solve for x
    x = 76,810,902,045.03/313,489.20
  6. Step 6: Final answer
    x = 245,019.29

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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.