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Finding the Fourth Proportional to 313,680.81, 432,869.88 and 170,437.80

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Solution

The fourth proportional to 313,680.81, 432,869.88 and 170,437.80 is: 235,198.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,680.81 : 432,869.88 = 170,437.80 : x
  2. Step 2: Convert to fraction form
    313,680.81/432,869.88 = 170,437.80/x
  3. Step 3: Cross multiply
    313,680.81x = 432,869.88 × 170,437.80
  4. Step 4: Simplify right side
    313,680.81x = 73,777,390,033.46
  5. Step 5: Solve for x
    x = 73,777,390,033.46/313,680.81
  6. Step 6: Final answer
    x = 235,198.93

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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.