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Finding the Fourth Proportional to 306,706.04, 423,279.94 and 170,765.78

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Solution

The fourth proportional to 306,706.04, 423,279.94 and 170,765.78 is: 235,671.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,706.04 : 423,279.94 = 170,765.78 : x
  2. Step 2: Convert to fraction form
    306,706.04/423,279.94 = 170,765.78/x
  3. Step 3: Cross multiply
    306,706.04x = 423,279.94 × 170,765.78
  4. Step 4: Simplify right side
    306,706.04x = 72,281,729,112.45
  5. Step 5: Solve for x
    x = 72,281,729,112.45/306,706.04
  6. Step 6: Final answer
    x = 235,671.03

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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.