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Finding the Fourth Proportional to 313,628.40, 432,809.27 and 170,388.41

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Solution

The fourth proportional to 313,628.40, 432,809.27 and 170,388.41 is: 235,137.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,628.40 : 432,809.27 = 170,388.41 : x
  2. Step 2: Convert to fraction form
    313,628.40/432,809.27 = 170,388.41/x
  3. Step 3: Cross multiply
    313,628.40x = 432,809.27 × 170,388.41
  4. Step 4: Simplify right side
    313,628.40x = 73,745,680,332.57
  5. Step 5: Solve for x
    x = 73,745,680,332.57/313,628.40
  6. Step 6: Final answer
    x = 235,137.13

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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.