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Finding the Fourth Proportional to 302,765.80, 454,148.70 and 256,109.80

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Solution

The fourth proportional to 302,765.80, 454,148.70 and 256,109.80 is: 384,164.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,765.80 : 454,148.70 = 256,109.80 : x
  2. Step 2: Convert to fraction form
    302,765.80/454,148.70 = 256,109.80/x
  3. Step 3: Cross multiply
    302,765.80x = 454,148.70 × 256,109.80
  4. Step 4: Simplify right side
    302,765.80x = 116,311,932,727.26
  5. Step 5: Solve for x
    x = 116,311,932,727.26/302,765.80
  6. Step 6: Final answer
    x = 384,164.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.