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Finding the Fourth Proportional to 275,798.20, 380,588.70 and 153,284.88

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Solution

The fourth proportional to 275,798.20, 380,588.70 and 153,284.88 is: 211,526.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,798.20 : 380,588.70 = 153,284.88 : x
  2. Step 2: Convert to fraction form
    275,798.20/380,588.70 = 153,284.88/x
  3. Step 3: Cross multiply
    275,798.20x = 380,588.70 × 153,284.88
  4. Step 4: Simplify right side
    275,798.20x = 58,338,493,208.86
  5. Step 5: Solve for x
    x = 58,338,493,208.86/275,798.20
  6. Step 6: Final answer
    x = 211,526.01

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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.