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Finding the Fourth Proportional to 313,686.40, 432,889.08 and 170,446.42

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Solution

The fourth proportional to 313,686.40, 432,889.08 and 170,446.42 is: 235,217.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,686.40 : 432,889.08 = 170,446.42 : x
  2. Step 2: Convert to fraction form
    313,686.40/432,889.08 = 170,446.42/x
  3. Step 3: Cross multiply
    313,686.40x = 432,889.08 × 170,446.42
  4. Step 4: Simplify right side
    313,686.40x = 73,784,393,943.09
  5. Step 5: Solve for x
    x = 73,784,393,943.09/313,686.40
  6. Step 6: Final answer
    x = 235,217.06

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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.