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Finding the Fourth Proportional to 313,634.40, 432,817.55 and 170,394.41

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Solution

The fourth proportional to 313,634.40, 432,817.55 and 170,394.41 is: 235,145.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,634.40 : 432,817.55 = 170,394.41 : x
  2. Step 2: Convert to fraction form
    313,634.40/432,817.55 = 170,394.41/x
  3. Step 3: Cross multiply
    313,634.40x = 432,817.55 × 170,394.41
  4. Step 4: Simplify right side
    313,634.40x = 73,749,688,053.84
  5. Step 5: Solve for x
    x = 73,749,688,053.84/313,634.40
  6. Step 6: Final answer
    x = 235,145.41

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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.