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Finding the Fourth Proportional to 306,017.80, 422,296.08 and 170,048.20

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Solution

The fourth proportional to 306,017.80, 422,296.08 and 170,048.20 is: 234,661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,017.80 : 422,296.08 = 170,048.20 : x
  2. Step 2: Convert to fraction form
    306,017.80/422,296.08 = 170,048.20/x
  3. Step 3: Cross multiply
    306,017.80x = 422,296.08 × 170,048.20
  4. Step 4: Simplify right side
    306,017.80x = 71,810,688,271.06
  5. Step 5: Solve for x
    x = 71,810,688,271.06/306,017.80
  6. Step 6: Final answer
    x = 234,661.80

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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.