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Finding the Fourth Proportional to 300,980.12, 415,394.88 and 186,295.55

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Solution

The fourth proportional to 300,980.12, 415,394.88 and 186,295.55 is: 257,114.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,980.12 : 415,394.88 = 186,295.55 : x
  2. Step 2: Convert to fraction form
    300,980.12/415,394.88 = 186,295.55/x
  3. Step 3: Cross multiply
    300,980.12x = 415,394.88 × 186,295.55
  4. Step 4: Simplify right side
    300,980.12x = 77,386,217,636.78
  5. Step 5: Solve for x
    x = 77,386,217,636.78/300,980.12
  6. Step 6: Final answer
    x = 257,114.05

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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.