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Finding the Fourth Proportional to 313,540.59, 432,688.28 and 170,300.64

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Solution

The fourth proportional to 313,540.59, 432,688.28 and 170,300.64 is: 235,016.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,540.59 : 432,688.28 = 170,300.64 : x
  2. Step 2: Convert to fraction form
    313,540.59/432,688.28 = 170,300.64/x
  3. Step 3: Cross multiply
    313,540.59x = 432,688.28 × 170,300.64
  4. Step 4: Simplify right side
    313,540.59x = 73,687,090,153.00
  5. Step 5: Solve for x
    x = 73,687,090,153.00/313,540.59
  6. Step 6: Final answer
    x = 235,016.11

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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.